Original prusa I3 mk3 User manual

Table of Contents

1. Introduction 9 ......................................................................................................................

Step 1 - Preparing the upgrade kit 10 .............................................................................

Step 2 - Getting the necessary tools 10 .........................................................................

Step 3 - Additional utilities for this guide 11 .................................................................

Step 4 - Labels guide 11 ....................................................................................................

Step 5 - Spare bag 12 ........................................................................................................

Step 6 - Printed parts - versioning 12 .............................................................................

Step 7 - Printed parts - self printing 13 ..........................................................................

Step 8 - Printable parts - Silver to Black PSU 14 .........................................................

Step 9 - Printed parts post-processing 15 .....................................................................

Step 10 - We are here for you! 16 ....................................................................................

Step 11 - Pro tip: inserting the nuts 17 ............................................................................

Step 12 - View high resolution images 17 ......................................................................

Step 13 - Important: Electronics protection 18 .............................................................

Step 14 - Reward yourself 19 ............................................................................................

Step 15 - How to successfully finish the assembly 20 ................................................

Step 16 - Prepare your desk 21 ........................................................................................

1a. Parts check 22 ...................................................................................................................

Step 1 - Introduction 23 ....................................................................................................

Step 2 - Preparing the printer 23 ....................................................................................

Step 3 - Heatbed inspection 24 .......................................................................................

Step 4 - X-axis smooth rods inspection 24 ...................................................................

Step 5 - Y-axis smooth rods inspection 25 ....................................................................

Step 6 - Printer frame inspection 25 ..............................................................................

Step 7 - Can I open the Haribo? 26 ................................................................................

Step 8 - Let's get started 26 .............................................................................................

1b. Printer disassembly 27 ...................................................................................................

Step 1 - Tools necessary for this chapter 28 .................................................................

Step 2 - Opening the electronics box 28 .......................................................................

Step 3 - Disconnecting cables 29 ...................................................................................

Step 4 - Removing the Einsy-base 29 ............................................................................

Step 5 - Removing the Einsy-door 30 ............................................................................

Step 6 - Removing the heatbed 30 .................................................................................

Step 7 - Dismantling cable management 31 .................................................................

Step 8 - Removing the LCD assembly 31 ......................................................................

Step 9 - Dismantling the Y-axis: removing the belt 32 ...............................................

Step 10 - Removing the Y-axis assembly 32 .................................................................

Step 11 - Removing the Z-axis-tops 33 ...........................................................................

Step 12 - Removing the cable-holder 33 ........................................................................

Step 13 - Removing the X-axis assembly 34 .................................................................

Step 14 - Removing the Z-axis motors 34 .....................................................................

Step 15 - Removing the Z-axis-bottoms 35 ...................................................................

Step 16 - Removing the Y-motor 35 ...............................................................................

Step 17 - Disconnecting the power cables (Black PSU) 36 ........................................

Step 18 - Disassembling the Y-carriage: belt 36 ..........................................................

Step 19 - Dissasembling the Y-carriage: rod holders 37 .............................................

Step 20 - Disassembling the Y-carriage: bearings 37 ................................................

Step 21 - Disassembling the X-axis: Removing the pulley 38 ...................................

Step 22 - Removing the X-axis motor 38 ......................................................................

Step 23 - Removing the X-axis smooth rods 39 ..........................................................

Step 24 - Removing the X-axis bearings 39 .................................................................

Step 25 - Removing the X motor pulley 40 ...................................................................

Step 26 - For new users of black PSU 40 .....................................................................

Step 27 - Parts summary I. 41 ..........................................................................................

Step 28 - Parts summary II. 41 ........................................................................................

Step 29 - Don't throw away 42 ........................................................................................

Step 30 - Can I take a gummy bear yet? 42 .................................................................

Step 31 - Well done 43 ......................................................................................................

1c. Parts preparation 44 ........................................................................................................

Step 1 - Tools necessary for this chapter 45 .................................................................

Step 2 - Removing the heatbed cable cover 45 ............................................................

Step 3 - Removing the heatbed thermistor 46 .............................................................

Step 4 - New heatbed thermistor: parts preparation 46 .............................................

Step 5 - Preparing the heatbed and thermistor 47 ......................................................

Step 6 - Covering the thermistor 47 ...............................................................................

Step 7 - Fixing the thermistor in place 48 .....................................................................

Step 8 - M3nEs nuts: parts preparation 48 ...................................................................

Step 9 - Inserting the M3nEs nuts 49 ............................................................................

Step 10 - Cable clips: parts preparation 49 ...................................................................

Step 11 - Installing the cable clips 50 .............................................................................

Step 12 - Installing the cable clips 50 ............................................................................

Step 13 - PG-front-case: parts preparation 51 ..............................................................

Step 14 - Assembling the PG-front-case 51 ..................................................................

Step 15 - Stickers and labels: parts preparation I. 52 ..................................................

Step 16 - Stickers and labels: parts preparation II. 52 ................................................

Step 17 - xLCD-cover sticker (optional) 53 ....................................................................

Step 18 - xLCD-cover sticker (optional) 53 ...................................................................

Step 19 - PG-case sticker (optional) 54 .........................................................................

Step 20 - PG-case sticker (optional) 54 .........................................................................

Step 21 - Sticking the serial number label 55 ...............................................................

Step 22 - Safety label (optional) 55 ................................................................................

Step 23 - Parts summary I. 56 .........................................................................................

Step 24 - Parts summary II. 56 ........................................................................................

Step 25 - Don't throw away 57 ........................................................................................

Step 26 - Still no sweets? 57 ...........................................................................................

Step 27 - That's it 58 .........................................................................................................

2. Frame assembly 59 ...........................................................................................................

Step 1 - Tools necessary for this chapter 60 .................................................................

Step 2 - xBuddy box: parts preparation 60 ...................................................................

Step 3 - Mounting the xBuddy box: parts preparation 61 ...........................................

Step 4 - Mounting the xBuddy box 61 ............................................................................

Step 5 - Mounting the xBuddy box 62 ...........................................................................

Step 6 - Mounting the xBuddy box 62 ...........................................................................

Step 7 - Applying the thermal pads 63 ..........................................................................

Step 8 - Mounting the xBuddy board 63 .......................................................................

Step 9 - Attaching the zip ties 64 ...................................................................................

Step 10 - Preparing Y-belt-idler (part 1) 64 ...................................................................

Step 11 - Preparing Y-belt-idler (part 2) 65 ...................................................................

Step 12 - Mounting the Y-belt-idler 65 ..........................................................................

Step 13 - Assembling the Y motor: parts preparation 66 ...........................................

Step 14 - Assembling the Y motor 66 ............................................................................

Step 15 - Assembling the Y-motor-holder 67 ...............................................................

Step 16 - Assembling the Y-motor-holder 67 ...............................................................

Step 17 - Attaching the Y-motor-holder 68 ...................................................................

Step 18 - Haribo 69 ............................................................................................................

Step 19 - It's done! 69 ........................................................................................................

3. X-axis & X-carriage assembly 70 ................................................................................

Step 1 - Tools necessary for this chapter 71 ..................................................................

Step 2 - X-axis assembly: parts preparation 71 ............................................................

Step 3 - Assembling the X-end-motor 72 .....................................................................

Step 4 - Assembling the X-end-motor 72 .....................................................................

Step 5 - Assembling the X-end-idler 73 ........................................................................

Step 6 - Assembling the X-end-idler 73 ........................................................................

Step 7 - Assembling the X-end-idler 74 ........................................................................

Step 8 - Mounting the bearings: parts preparation 74 ................................................

Step 9 - Mounting the bearings: parts preparation (lubricating) 75 .........................

Step 10 - Lubricating the bearing 75 ..............................................................................

Step 11 - Lubricating the bearing 76 ...............................................................................

Step 12 - Inserting the bearings: X-end-motor 76 .......................................................

Step 13 - Inserting the bearings: bearing pads 77 ........................................................

Step 14 - Covering the bearings: X-end-motor 77 .......................................................

Step 15 - Inserting the bearings: X-end-idler 78 ..........................................................

Step 16 - Assembling the X-axis: parts preparation 78 ..............................................

Step 17 - Assembling the X-axis: Marking the bearings 79 .......................................

Step 18 - Assembling the X-axis: parts preparation (lubricating) 79 .......................

Step 19 - Lubricating the bearing 80 ..............................................................................

Step 20 - Lubricating the bearing 80 .............................................................................

Step 21 - Assembling the X-axis: Inserting smooth rods 81 .......................................

Step 22 - Assembling the X-axis: mounting the X-end-motor 81 .............................

Step 23 - Assembling the X-carriage: parts preparation 82 ......................................

Step 24 - Assembling the X-carriage 82 .......................................................................

Step 25 - Attaching the spacers 83 ................................................................................

Step 26 - Attaching the spacers 83 ................................................................................

Step 27 - Assembling the X-carriage-clip: parts preparation 84 ..............................

Step 28 - Assembling the X-carriage-clip 84 ...............................................................

Step 29 - Attaching the X-carriage-clip 85 ...................................................................

Step 30 - Attaching the X motor: parts preparation 86 ..............................................

Step 31 - Attaching the X motor 86 ................................................................................

Step 32 - Attaching the X motor: mounting the pulley 87 .........................................

Step 33 - Guiding the X belt: parts preparation 87 .....................................................

Step 34 - Guiding the X belt: X-end-idler 88 ...............................................................

Step 35 - Guiding the X belt: X-end-motor 88 .............................................................

Step 36 - Guiding the X belt: X-carriage 89 .................................................................

Step 37 - Assembling the X-carriage: final check 89 ..................................................

Step 38 - Haribo 90 ...........................................................................................................

Step 39 - It's done! 90 .......................................................................................................

4. Z-axis assembly 91 ............................................................................................................

Step 1 - Tools necessary for this chapter 92 .................................................................

Step 2 - Assembling the Z-bottoms: parts preparation 92 ........................................

Step 3 - Assembling the Z-bottoms 93 .........................................................................

Step 4 - Z motor assembling: parts preparation 93 ....................................................

Step 5 - Attaching the rubber pads 94 ..........................................................................

Step 6 - Installing the Z motors 94 .................................................................................

Step 7 - Z motor cable adapter: parts preparation 95 .................................................

Step 8 - Connecting the Z motor cable adapters 95 ...................................................

Step 9 - Connecting the Z motors 96 ............................................................................

Step 10 - Mounting the X-axis assembly: parts preparation 96 ................................

Step 11 - Mounting the X-axis and smooth rods 97 .....................................................

Step 12 - Assembling the X-axis and smooth rods 97 ................................................

Step 13 - Installing the X-axis assembly 98 ..................................................................

Step 14 - Assembling the trapezoidal nuts 98 ..............................................................

Step 15 - Installing the Z-top parts: parts preparation 99 ..........................................

Step 16 - Placing the Z-top parts 99 ...............................................................................

Step 17 - LoveBoard: parts preparation 100 ..................................................................

Step 18 - Assembling the LoveBoard 100 ......................................................................

Step 19 - Connecting the extruder main cable 101 ......................................................

Step 20 - Mounting the extruder main cable 101 .........................................................

Step 21 - Connecting the extruder main cable: parts preparation 102 .....................

Step 22 - Connecting the extruder main cable 102 .....................................................

Step 23 - Covering the X-carriage: parts preparation 103 .........................................

Step 24 - Covering the X-carriage: inserting the nylon filament 103 .......................

Step 25 - Attaching the X-cover-back 104 ....................................................................

Step 26 - Guiding the main-cable: parts preparation 105 ..........................................

Step 27 - Wraping the extruder main cable 106 ..........................................................

Step 28 - Wrapping the textile sleeve 106 .....................................................................

Step 29 - Ext-cable-holder: parts preparation 107 .......................................................

Step 30 - Ext-cable-holder: parts preparation 107 .......................................................

Step 31 - Wrapping the X motor cable 108 ...................................................................

Step 32 - Attaching the Ext-cable-holder 108 ..............................................................

Step 33 - Assembling the Ext-cable-holder 109 ..........................................................

Step 34 - Assembling the Ext-cable-holder 109 ..........................................................

Step 35 - Connecting the X motor cable adapter 110 .................................................

Step 36 - Attaching the Ext-cable-holder 110 ...............................................................

Step 37 - Reward yourself! 111 .........................................................................................

Step 38 - Here it is! 111 ......................................................................................................

5. Nextruder assembly 112 ...................................................................................................

Step 1 - Tools necessary for this chapter 113 ................................................................

Step 2 - Filament sensor: parts preparation 113 ...........................................................

Step 3 - Assembling the filament sensor 114 ................................................................

Step 4 - Assembling the filament sensor 114 ................................................................

Step 5 - Nextruder idler assembly: parts preparation 115 ..........................................

Step 6 - Assembling the extruder idler 115 ...................................................................

Step 7 - Assembling the extruder: parts preparation I. 116 ........................................

Step 8 - Assembling the extruder: parts preparation II. 116 .......................................

Step 9 - Assembling the extruder 117 .............................................................................

Step 10 - Assembling the gearbox 117 ............................................................................

Step 11 - Assembling the PG-ring 118 .............................................................................

Step 12 - Assembling the PG-assembly 118 ..................................................................

Step 13 - Checking the PG-assembly 119 ......................................................................

Step 14 - Assembling the Nextruder idler 119 ...............................................................

Step 15 - Covering the planetary gear 120 ....................................................................

Step 16 - Assembling the Idler-swivel: parts preparation 120 ...................................

Step 17 - Assembling the Idler-swivel 121 ......................................................................

Step 18 - Assembling the Idler-nut 121 ..........................................................................

Step 19 - Mounting the Idler-swivel assembly 122 ......................................................

Step 20 - Attaching the extruder: parts preparation 122 ............................................

Step 21 - Assembling the heatsink 123 ..........................................................................

Step 22 - Attaching the extruder 123 .............................................................................

Step 23 - Connecting the NTC thermistor 124 .............................................................

Step 24 - Assembling the hotend fan: parts preparation 124 ....................................

Step 25 - Assembling the hotend fan 125 .....................................................................

Step 26 - Inserting the hotend assembly: parts preparation 125 ..............................

Step 27 - Inserting the hotend assembly 126 ................................................................

Step 28 - Connecting the hotend cables 126 ................................................................

Step 29 - Assembling the fan-door: parts preparation 127 ........................................

Step 30 - Assembling the fan door 127 ..........................................................................

Step 31 - Assembling the fan-door 128 ..........................................................................

Step 32 - Assembling the fan-door 128 .........................................................................

Step 33 - Assembling the fan-door 129 .........................................................................

Step 34 - Assembling the fan-door 129 .........................................................................

Step 35 - Connecting the extruder cables 130 .............................................................

Step 36 - Connecting the print fan 130 .........................................................................

Step 37 - LoveBoard: Wiring check 131 .........................................................................

Step 38 - Covering the LoveBoard: parts preparation 131 ..........................................

Step 39 - Covering the LoveBoard 132 ..........................................................................

Step 40 - Covering the LoveBoard 132 ..........................................................................

Step 41 - Tensioning the X-axis belt 133 .......................................................................

Step 42 - Belt tension check 134 .....................................................................................

Step 43 - Testing the X-axis belt 134 .............................................................................

Step 44 - Haribo time! 135 ................................................................................................

Step 45 - The extruder is assembled 135 ......................................................................

6. xLCD assembly 136 ...........................................................................................................

Step 1 - Tools necessary for this chapter 137 ................................................................

Step 2 - xLCD assembly: parts preparation 137 ...........................................................

Step 3 - xLCD assembly: parts preparation (part 2) 138 .............................................

Step 4 - xLCD assembly: inserting the square nuts 138 .............................................

Step 5 - Installing the xReflector sticker 139 ................................................................

Step 6 - Assembling the xLCD-support-right 139 .......................................................

Step 7 - Installing the PE Faston 140 ..............................................................................

Step 8 - Assembling the xLCD-support-left 140 ..........................................................

Step 9 - xLCD cables: parts preparation 141 .................................................................

Step 10 - Connecting the PE cable 141 ...........................................................................

Step 11 - Attaching the knob 142 .....................................................................................

Step 12 - Attaching the xLCD assembly 142 .................................................................

Step 13 - Guiding the xLCD cable 143 ...........................................................................

Step 14 - Black vs Silver PSU 143 ...................................................................................

Step 15 - Connecting the PSU (Black PSU): parts preparation 144 ..........................

Step 16 - Connecting the PSU (Black PSU): PE cable 144 .........................................

Step 17 - Power cables info (Black PSU) 145 ................................................................

Step 18 - Connecting the PSU (Black PSU) 146 ...........................................................

Step 19 - Connecting the power panic (Black PSU) 147 .............................................

Step 20 - Guiding the Z motor right cable (Black PSU) 147 ......................................

Step 21 - Guiding the power cable bundle (Black PSU) 148 ......................................

Step 22 - Guiding the power cables (Black PSU) 148 .................................................

Step 23 - Y motor cable adapter (Black PSU): parts preparation 149 ......................

Step 24 - Connecting the X and Y motor cables (Black PSU) 149 ............................

Step 25 - Connecting the PSU cable (Black PSU): parts preparation 149 ..............

Step 26 - Connecting the PSU cables (Black PSU): PE cable 150 ............................

Step 27 - Connecting the PSU cables (Black PSU) 150 ..............................................

Step 28 - PSU - PE cable (Silver PSU): parts preparation 151 ...................................

Step 29 - Inserting M3nEs nut (Silver PSU) 151 ..........................................................

Step 30 - Guiding the PE cable (Silver PSU) 152 .........................................................

Step 31 - Connecting the PE cables (Silver PSU) 152 .................................................

Step 32 - Connecting the extended PE cable (Silver PSU) 153 .................................

Step 33 - Guiding the Z motor right cable (Silver PSU) 153 ......................................

Step 34 - Guiding the power cable bundle (Silver PSU) 154 .....................................

Step 35 - Guiding the power cables (Silver PSU) 154 .................................................

Step 36 - Power panic extended cable (Silver PSU): parts preparation 155 ...........

Step 37 - Extending the power panic cable (Silver PSU) 155 ....................................

Step 38 - Y motor cable adapter (Silver PSU): parts preparation 156 ......................

Step 39 - Connecting the X and Y motor cables (Silver PSU) 156 ...........................

Step 40 - Connecting the PE cable (Silver PSU) 157 ..................................................

Step 41 - Connecting the PSU cables (Silver PSU) 157 ..............................................

Step 42 - Connecting the power panic cable (Silver PSU) 158 .................................

Step 43 - Securing the PSU cables 158 .........................................................................

Step 44 - Guiding the Z motor left cable 159 ...............................................................

Step 45 - Connecting the xLCD cables 159 ..................................................................

Step 46 - Connecting the extruder main cable 160 .....................................................

Step 47 - Time for energy delivery! 160 .........................................................................

Step 48 - Almost there! 161 ..............................................................................................

7. Y-carriage & Heatbed assembly 162 ...........................................................................

Step 1 - Tools necessary for this chapter 163 ................................................................

Step 2 - Heatbed cable assembly: parts preparation 164 ...........................................

Step 3 - Heatbed cable assembly (part 1) 164 ...............................................................

Step 4 - Heatbed cable assembly (part 2) 165 ..............................................................

Step 5 - Heatbed cable assembly (part 3) 165 ..............................................................

Step 6 - Covering the heatbed cables: parts preparation 166 ...................................

Step 7 - Assembling the heatbed-cable-cover-bottom 166 ........................................

Step 8 - Assembling the heatbed-cable-cover: nylon filament 167 ..........................

Step 9 - Assembling the heatbed-cable-cover-bottom 167 .......................................

Step 10 - Assembling the heatbed-cable-cover-top 168 .............................................

Step 11 - Wrapping the textile sleeve 168 ......................................................................

Step 12 - Y-carriage variations 169 .................................................................................

Step 13 - Y-carriage (old): parts preparation 169 .........................................................

Step 14 - Y-carriage (old): parts preparation (lubricating) 170 ...................................

Step 15 - Lubricating the bearing (old) 170 ...................................................................

Step 16 - Lubricating the bearing (old) 171 ....................................................................

Step 17 - Assembling the bearing clips (old) 171 ..........................................................

Step 18 - Installing the bearing on the Y-carriage (old) 172 .......................................

Step 19 - Aligning the bearing (old) 172 .........................................................................

Step 20 - Installing the bearings on the Y-carriage (old) 173 ....................................

Step 21 - Y-axis: smooth rods holders (old) 173 ............................................................

Step 22 - Inserting smooth rods into Y-carriage (old) 174 ..........................................

Step 23 - Y-carriage: parts preparation (new) 175 .......................................................

Step 24 - Y-carriage (new): parts preparation (lubricating) 175 ................................

Step 25 - Lubricating the bearing (new) 176 .................................................................

Step 26 - Lubricating the bearing (new) 176 .................................................................

Step 27 - Assembling the bearing clips (new) 177 .......................................................

Step 28 - Installing the bearing on the Y-carriage (new) 177 .....................................

Step 29 - Aligning the bearing (new) 178 ......................................................................

Step 30 - Installing the bearings on the Y-carriage (new) 178 ..................................

Step 31 - Y-axis (new): smooth rods holders 179 ..........................................................

Step 32 - Inserting smooth rods into Y-carriage (new) 179 ........................................

Step 33 - Preparing Y-rod-holder 180 ............................................................................

Step 34 - Mounting the Y-rod-holder parts 180 ...........................................................

Step 35 - Installing the Y-carriage 181 ...........................................................................

Step 36 - Aligning the smooth rods 181 .........................................................................

Step 37 - Assembling the Y belt: parts preparation 182 .............................................

Step 38 - Assembling the Y belt 182 ..............................................................................

Step 39 - Assembling the Y belt 183 ..............................................................................

Step 40 - Assembling the Y belt holder 183 ..................................................................

Step 41 - Assembling the Y belt tensioner 184 .............................................................

Step 42 - Assembling the Y belt tensioner 184 ............................................................

Step 43 - Tensioning the Y belt 185 ................................................................................

Step 44 - Belt tension check 185 .....................................................................................

Step 45 - Aligning the Y belt 186 ....................................................................................

Step 46 - Installing the Expansion joints: parts preparation 186 ..............................

Step 47 - Preparing the expansion joints 187 ................................................................

Step 48 - Installing the Expansion joints 187 ................................................................

Step 49 - Attaching the heatbed: parts preparation 188 ............................................

Step 50 - Attaching the heatbed 188 .............................................................................

Step 51 - Tightening the heatbed 189 ............................................................................

Step 52 - Guiding the heatbed cables: parts preparation 189 ...................................

Step 53 - Guiding the heatbed cables 190 ....................................................................

Step 54 - Covering the heatbed cables 190 ..................................................................

Step 55 - Verify all connections once more! 191 ...........................................................

Step 56 - Installing the ESP module: parts preparation 191 ......................................

Step 57 - Installing the ESP module 192 .......................................................................

Step 58 - Covering the xBuddy box: parts preparation 192 .......................................

Step 59 - Covering the xBuddy box 193 ........................................................................

Step 60 - Covering the xBuddy box 193 ........................................................................

Step 61 - Assembling the double spool holder (part 1) 194 ........................................

Step 62 - Assembling the double spool holder (part 2) 194 .......................................

Step 63 - Assembling the Filament guide: parts preparation 195 ............................

Step 64 - Filament guide assembly (part 1) 195 ...........................................................

Step 65 - Filament guide assembly (part 2) 196 ..........................................................

Step 66 - Haribo time! 196 ...............................................................................................

Step 67 - That's it 197 ........................................................................................................

8. Preflight check 198 ............................................................................................................

Step 1 - Attaching the steel sheet 199 ............................................................................

Step 2 - Firmware update (part 1) 200 ...........................................................................

Step 3 - Firmware update (part 2) 200 ..........................................................................

Step 4 - Wizard - Selftest start 201 ................................................................................

Step 5 - Wizard - Loadcell Test 201 ...............................................................................

Step 6 - Wizard - Gearbox Alignment 202 ....................................................................

Step 7 - Wizard - Filament Sensor Calibration 202 ....................................................

Step 8 - Wizard complete 203 .........................................................................................

Step 9 - Reward yourself! 203 .........................................................................................

Step 10 - Loading a filament 204 ....................................................................................

Step 11 - Printable 3D models 204 ..................................................................................

Step 12 - PrusaSlicer for MK3.9 205 ..............................................................................

Step 13 - PrusaLink and Prusa Connect 205 ................................................................

Step 14 - Quick guide for your first prints 206 .............................................................

Step 15 - Prusa knowledge base 206 .............................................................................

Step 16 - Join Printables! 206 ..........................................................................................

Manual changelog MK3.9 upgrade 207 .........................................................................

Step 1 - Version history 208 .............................................................................................

Original Prusa i3 MK3/MK3S/MK3S+ to MK3.9 upgrade 9

1. Introduction

10 Original Prusa i3 MK3/MK3S/MK3S+ to MK3.9 upgrade

STEP 1 Preparing the upgrade kit

Welcome to our step-by-step guide

on upgrading your Original Prusa i3

MK3/MK3S/MK3S+ to the

Original Prusa MK3.9.

Prepare the upgrade kit received

from Prusa Research.

WARNING: Before you start

disassembling the printer, ensure

that you have successfully printed

all the required parts for the

upgrade.

STEP 2 Getting the necessary tools

The package includes:

Needle-nose pliers (1x)

Philips (PH2) screwdriver (1x)

Universal wrench (1x)

Wrench size 13 mm (1x)

Torx key set

Allen key set

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