Prusa Mendel LM8UU Manual

Copyright 2012 NextDayReprap All registered trademarks belong to their respective owners, any unauthorized copying and redistribution is strictly prohibited. E&OE
LM8UU Prusa Mendel Build Manual
The programs supplied and referenced in this manual are free software: you can redistribute them and/or modify them under the terms of the GNU General Public License
as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. These programs are distributed in the hope that they will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
Public License for more details. You should have received a copy of the GNU General Public License along with these programs. If not, see http://www.gnu.org/licenses/.

A step by step guide for building your Prusa Mendel 3D Printer Kit.
The following instructions will take you through every step to build and commission your Prusa Mendel
3D printer. All the parts required are included in your kit. We recommend you read through the complete
manual to familiarize yourself with the process before starting. We also recommend you read the
following important points about your kit and the parts it contains.
Plastic Parts
All our plastic parts are printed on the same printers that you will be building. The parts are built at
varying densities to suit their application. Some are required to be stronger than others.
You should take special care when inserting bearings or nuts into plastic part recesses. Some parts
have more fragile areas. When inserting bearings ensure the part is held firmly on a flat surface, ensuring
there is no force on fragile areas. Then push the bearing into the recess, increase the force until the
bearing clips into place. If you cannot get the bearing in place, using a pair of large pliers and a small
amount of force should ensure they go all the way in, always ensure you keep the bearing level and
avoid pushing in at an angle.
Plastic parts will wear over time. You should regularly follow the the maintenance tips in the manual to
ensure your printer remains reliable. We recommend that if your first purpose is not to build yourself or a
friend a second printer then you should print a spare set of parts for your own. This will help you in the
future should a critical part wear out. This is also a great way to familiarize yourself with the print
process and all the files you need are included on the CD-Rom.
This manual is available to view and download as a pdf on our website http://www.nextdayreprap.co.uk
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

Health & Safety
This is a kit of components for assembly into a 3D Printer by the end user. Building and using the printer is
potentially very dangerous as it involves electricity and high temperatures.
Building the printer will require a certain amount of physical dexterity, common sense and a thorough
understanding of what you are doing. We have provided this fully comprehensive build documentation to
enable you to build your Prusa Mendel 3D Printer Kit in a safe manner, we have pre assembled many of the
more complicated components, such as the electronics to make it easier for you.
However ultimately we cannot be responsible for your health and safety whilst building or operating the
printer, with that in mind be sure you are confident with what you are doing prior to commencing with building
or buying. Read all of the manual to enable you to make an informed decision.
Building and operating involves electricity, so all necessary precautions should be taken and adhered to, the
printer runs on 12V supplied by a certified power supply, so you shouldn’t ever have to get involved with
anything over 12V but bear in mind there can still be high currents involved and even at 12V they shouldn’t be
taken lightly.
High temperatures are involved with 3D Printing, the Extrusion nozzle of the hot end runs at 230°C, the
heated bed runs a 110°C and the molten plastic extruded will initially be at around 200°C, so special care and
attention should be made when handling these parts of the printer during operation.
We wouldn’t recommend leaving your printer running un attended, or at least until you are confident to do so.
We cannot be held responsible for any loss, damage, threat, hurt or other negligent result from either building
or using the printer.
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 !Bill of Materials
!1.1!Check Kit Contents & Familiarize yourself with the kit components
2.0!Frame Assembly
!2.1!Parts Required
!2.2!Assembly
3.0!Y Axis Assembly
!3.1!Parts Required
!3.2!Assembly
!
4.0!X Z Axis Assembly
!4.1!Parts Required
!4.2!Assembly
!
5.0!Y Carriage Assembly
!5.1!Parts Required
!5.2!Assembly
6.0!Motor/Belt & Endstop Assembly
!6.1!Parts Required
!6.2!Assembly
!
7.0!Build/Heated Bed Assembly
!7.1!Parts Required
!7.2!Assembly
8.0!Extruder Assembly
!8.1!Parts Required
!8.2!Assembly
!3.3!Hot End Connection
9.0!Wiring
!9.1!Parts Required
!9.2!Completing Connections
!9.3!RAMPS Diagram
!9.4!RAMPS Board Connections
10.0!Computer setup
!10.0 !Hardware Driver Installation
!10.1!Hardware Setup & Connection.
! ! 10.1.2!Ardunio Driver - Windows XP Installation
! ! 10.1.3!Ardunio Driver - Windows 7 / Vista
!10.2!Arduino Software Installation
! ! 10.2.1!Ardunio Software - Windows XP Installation
! ! 10.2.2!Ardunio Software - Windows 7 / Vista Installation
Contents - Reprap Prusa Mendel Build Manual
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

!10.3!Python Environment & Dependencies Installation
!!10.3.1!Python Environment & Dependencies - Windows XP Installation
! ! 10.3.2!Python Environment & Dependencies - Windows 7 / Vista Installation
!10.4!Pronterface Installation
!!10.4.1!Pronterface/PrintRun- Windows XP Installation
! ! 10.4.2!Pronterface/PrintRun - Windows 7 / Vista Installation
!10.5!Skienforge Installation
! ! 10.5.1!Skienforge - Windows XP Installation
! ! 10.5.2!Skienforge - Windows 7 / Vista Installation
!10.6!Testing Software & Communicating With the Printer
! ! 10.6.1!Connecting Hardware & Testing - Windows XP
! ! 10.6.2!Connecting Hardware & Testing - Windows 7 / Vista
!10.7.0!Firmware Installation
! ! 10.7.1!Flashing Firmware, Test & Comms - Windows XP
! ! 10.7.2!Flashing Firmware, Test & Comms - Windows 7 / Vista
!10.8!Firmware Variables
11.0!Commissioning & Calibration
!11.1!Hardware Setup & Connection.
!11.1!Frame Levelling
!11.2!Bed Levelling
!11.3!Endstops
!11.4!Pololu Stepper Driver Calibration
!11.5!Hot End
!11.6!Heated Bed
!11.7!Loading Filament
!11.8 !Removing Filament
!11.9 !Changing Hot Ends
!11.10!Printing a Test Print
12.0!Maintenance
!12.0!Health & Safety
!12.1!Axis Lubrication
!12.2!Hot End & Nozzle
!12.3!Nuts & Bolts
!12.4!Extruder & Gears
!12.5!Electronics
!12.6!Pulley Grub Screws & Belt Tensions
!12.7!Build Surface
!12.8!Bed Leveling
!12.9 !Plastic Parts
!12.10!Bearings
!
Contents - Reprap Prusa Mendel Build Manual
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
Check Kit Contents & Familiarize yourself with the kit components
Below is a complete list of all the components within your kit, please check everything is present prior to
starting your build. It includes everything you need to build your printer and start printing, except for a
computer! If anything is missing please advise us straight away.
!Tools & Ancillaries
!0.1 !Build Manual
!0.2!Operation Manual
!0.3!Software CD/Flash Drive
!0.4!33M 20mm Kapton Tape
!0.5!Cable Ties
!0.11!.25 Kg White 3mm ABS Filament
!0.12!Silver Tape
!0.13!Cable Tidy
!1.0 Electronics
!1.1!Fully assembled RAMPS 1.4 Wired & Soldered with Hot end power & Thermistor attached.
!1.2!Ramps Power Cables
!1.3!3x Mechanical Endstops with Completed Wiring
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!1.4!550W ATX PSU
!1.5!ATX Power Supply Adaptor (to switch PSU)
!1.6!V2 Heat bed with Surface Mount LEDs/Resistor & Soldered Power Cable (inc Thermistor)
!1.7!5 x Nema 17 Stepper Motors with Connectors & Crimps
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!1.8!Fully assembled Hot End wired for Power & Thermistor with Mini Fit Molex connectors.
!1.9!Mains Power Lead (Kettle Type) & 1M USB 2.0 Cable
!2.0 Rod
!2.1!6x 300mm A2 Stainless 1.25mm Pitch Threaded Rod - YUP
!2.2!2x 450mm BZP 1.25mm Pitch Threaded Rod
!2.3!1x 320mm BZP 1.25mm Pitch Threaded
!2.4!6x 380mm BZP 1.25mm Pitch Threaded Rod
!2.5!2x 330mm Bright Stainless Steel Round Rod - YUP
!2.6!2x 400mm Steel Round Rod
!2.7!2x 400mm Steel Round Rod
!2.8!1x 16mm Steel Round Rod ( Extruder Idler)
!2.9!1x 50mm Threaded Rod (X Idler)
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!3.0 Nuts & Bolts
!3.1!6 x M2 16mm Hex Socket Bolts
!
!3.2!30x M3 10mm Hex Socket Bolts
!3.3!15x M3 20mm Hex Socket Bolts
!3.4!2x M3 40mm Hex Socket Bolts
!3.5!2x M4 50mm Hex Socket Bolts
!3.6!2x M4 45mm Hex Head Bolts
!3.7!4x M4 40mm Countersunk Hex Socket Bolts
!3.8!6x M8 30mm Fender/Penny Washers
!3.9!6x M2 Nuts
!3.10!28x M3 Nuts
!3.11!8x M4 Nuts
!3.12!86x M8 Nuts
!3.13!2x M3 Nylock Nuts
!3.14!1x M8 Nylock Nuts
!3.15!12x M2 Washers
!3.16!56x M3 Washers
!3.17!16x M4 Washers
!3.18!88x M8 Washers
!3.19!1x Hobbed Bolt
!3.20!1x M3 10mm Grub Screw (Extruder Small Gear)
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!4.0 Bearings & Pulleys & Couplings
!4.1!12x LM8UU Bearings (1 Spare) (Some may have been pre fitted to the printed parts)
!4.2!9 x 608ZZ Bearings (1 Spare)
!4.3!2x 12 tooth T5 XL Aluminum Pulleys
!4.4!2x Rigid Z Axis Couplings
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!5.0 Springs
!5.1!4 x Heat Bed Springs
!5.2!2x Z Axis Springs
!5.3!2x Extruder Springs
!6.0 Timing Belts
!6.1!2x 1M Brecoflex 6mm T5 Belt
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!7.0 Build Plate
!7.1!Laser Cut Aluminum Build Bed
!7.2!Laser Cut Plywood Build Bed Top Plate
!7.4!4x 51mm Bull Dog Clips
!7.5!225cm x 225cm Build Plate Mirror
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!8.0 Printed Parts
!8.1!4x Bar Clamps
!8.2!2 x Rod Clamps
!8.3!4 x Belt Clamps
!8.4!3 x Endstop Holder
!8.5!4 x LM8UU Bearing Pillows
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!8.6! ! 1 x Extruder
! ! 8.6.1!1 x Extruder Idler
! ! 8.6.2!1x Extruder Large Gear
! ! 8.6.3!1x Extruder Small Gear!
!
!8.7!2 x Frame Vertex
!8.8!4x Frame Vertex with Foot
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!8.9!2x Lower Z Mount
!
!8.10!1 x X Motor Mount
!8.11!1 x X Idler
!8.12!1x Y Motor Mount
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!8.13!2x Z Motor Mount
!8.14!1 x X Carriage
!8.15!1x Hot End Clamp
!8.16!1x Ramps Box
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

1.0 Bill of Materials - Reprap Prusa Mendel Build Manual
!All Printed Parts
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012

2.0 Frame Assembly - Reprap Prusa Mendel Build Manual
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012
A step by step guide for building your Prusa Mendel 3D Printer Kit.
2.1 !Parts Required
!2 x Lower Z Mount
!2 x Frame Vertex
!4 x Frame Vertex
!4 x Bar Clamp
!1 x Y Motor Mount
!2 x Z Motor Mount
!6 x 380mm Threaded Rod
!4 x 300mm Threaded Rod
!1 x 320mm Threaded Rod
!2 x 450mm Threaded Rod
!4 x M8 Fender Washers
!80 x M8 Washers
!78 x M8 Nuts
!4 x 608 Bearings
2.2 !Assembly
Step 1
Take one Lower Z Mount and push in one 608 Bearing. Push down against a solid flat surface
to ensure the bearing sits flush in the plastic part.

2.0 Frame Assembly - Reprap Prusa Mendel Build Manual
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012
Step 2
Take one 380mm Threaded Rod and thread on the following parts from left to right. M8 Nut/M8
Washer/Vertex with Foot/M8 Washer/M8 Nut/M8 Nut/M8 Washer/Lower Z Mount/M8 Washer/
M8 Nut/M8 Nut/M8 Washer/Vertex with Foot/M8 Washer/M8 Nut. Space the parts as in the
photo below. Leave approximately 5mm of thread showing on the end of the rods. The Lower Z
mount should be central on the rod. Do not over tighten the M8 Nuts. Leave them finger tight
at this stage.
Step 3
Take one 380 mm Threaded Rod and thread on the following parts from left to right. M8
Washer/M8 Nut/M8 Nut/M8 Washer/Frame Vertex/M8 Washer/M8 Nut. Space apart as in the
photo below.

2.0 Frame Assembly - Reprap Prusa Mendel Build Manual
©2012 NextDayReprap Prusa Mendel Kit Build Manual V1.01 - 07/2012
Step 4
Take another 380 mm Threaded Rod and thread on the following parts from left to right. M8
Nut/M8 Washer/M8 Nut. Push this rod through the Frame Vertex from step 3 and attach an M8
washer and M8 nut to secure it. Your component should look like the photo below.
Step 5
Take your component from step one and thread it on to the component from step four. Add an
M8 washer and M8 nut to the end of the threaded rods. Your component should look like the
photo below.
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