Prusa Research Original Prusa SL1 User manual
1
Table of Contents
1. Introduction 5 ......................................................................................................................
Step 1 - All the required tools are included 6 ................................................................
Step 2 - Boxes and bags are labelled 6 ..........................................................................
Step 3 - Use labels for reference 6 .................................................................................
Step 4 - Spare bag 7 ..........................................................................................................
Step 5 - View high resolution images 7 .........................................................................
Step 6 - We are here for you! 7 ........................................................................................
Step 7 - Unpacking the SL1 kit 8 .....................................................................................
Step 8 - Important: Electronics protection 9 ................................................................
Step 9 - Regular rewards are crucial! 10 ........................................................................
Step 10 - How to successfully finish the assembly 11 .................................................
2. Base & Tower 13 .................................................................................................................
Step 1 - Tools and bags for this chapter 14 ...................................................................
Step 2 - Preparing parts from the package 14 ..............................................................
Step 3 - Preparing parts from the package 14 ..............................................................
Step 4 - Tower and PSU parts preparation 15 ..............................................................
Step 5 - Arranging the back plate 15 ..............................................................................
Step 6 - Connecting the tower 16 ...................................................................................
Step 7 - Connecting the tower 16 ....................................................................................
Step 8 - Connecting the SL1 PSU 17 ..............................................................................
Step 9 - Tower and PSU parts preparation 17 ..............................................................
Step 10 - Mounting the bottom plate 18 ........................................................................
Step 11 - Mounting the supports 18 ................................................................................
Step 12 - Mounting the adjustable feet 19 .....................................................................
Step 13 - Preparing PSU cables 20 .................................................................................
Step 14 - Connecting the cables 20 ................................................................................
Step 15 - Preparing the tilt motor parts 20 ...................................................................
Step 16 - Preparing the tilt motor parts 21 ....................................................................
Step 17 - The tilt motor assembly 21 ..............................................................................
Step 18 - The tilt motor assembly 22 ..............................................................................
Step 19 - The tilt motor assembly 22 .............................................................................
Step 20 - Preparing the reflector 23 ...............................................................................
Step 21 - Mounting the reflector 23 ................................................................................
Step 22 - Right blower fan parts preparation 24 .........................................................
Step 23 - Right blower fan parts preparation 24 .........................................................
Step 24 - Blower fan gasket 25 .......................................................................................
Step 25 - Fan assembly (new version) 25 .....................................................................
Step 26 - Fan assembly (old version) 26 .......................................................................
Step 27 - Blower assembly 26 .........................................................................................
Step 28 - Mounting the fan assembly 27 ......................................................................
Step 29 - Tilt preassembly parts preparation 27 .........................................................
Step 30 - Resin sensor cable assembly 28 ....................................................................
Step 31 - Tilt parts preparation 28 ..................................................................................
Step 32 - Mounting the tilt assembly 29 .......................................................................
Step 33 - Optical sensor calibration 29 .........................................................................
Step 34 - Haribo time! 30 .................................................................................................
Step 35 - Final check 30 ...................................................................................................
3. Covers & Platform 32 .......................................................................................................
Step 1 - Tools and bags for this chapter 33 ...................................................................
Step 2 - Preparing parts from the package 33 .............................................................
2
Step 3 - Tower covers - parts preparation 33 ...............................................................
Step 4 - Mounting the left tower sheet 34 ....................................................................
Step 5 - Sensors parts preparation 34 ...........................................................................
Step 6 - Assembling the sensors 35 ...............................................................................
Step 7 - Assembling the covercheck 36 ........................................................................
Step 8 - Sensors cable management 36 .......................................................................
Step 9 - Tower covers - parts preparation 37 ...............................................................
Step 10 - Mounting the right tower sheet 37 ................................................................
Step 11 - Filtration assembly parts preparation 38 ......................................................
Step 12 - Filtration assembly parts preparation 38 ......................................................
Step 13 - Assembling the filtration fan 39 .....................................................................
Step 14 - Gasket preparation 39 .....................................................................................
Step 15 - Glueing the gasket 40 ......................................................................................
Step 16 - Removing parts of the gasket 40 ...................................................................
Step 17 - Installing the housing 41 ..................................................................................
Step 18 - Preparing the second gasket 41 .....................................................................
Step 19 - Glueing the second gasket 42 ........................................................................
Step 20 - Assembling the housing lid 42 ......................................................................
Step 21 - Preparing the rear cover parts 43 ..................................................................
Step 22 - Mounting the filtration assembly 43 .............................................................
Step 23 - Mounting the filtration assembly 44 .............................................................
Step 24 - Cable management - the rear cover 44 .......................................................
Step 25 - Mounting the rear cover 45 ............................................................................
Step 26 - Print platform part preparation 45 ................................................................
Step 27 - Assembling the platform 46 ...........................................................................
Step 28 - Knob parts preparation 46 ..............................................................................
Step 29 - Inserting adjustable screws 47 ......................................................................
Step 30 - Mounting the eccentric 47 .............................................................................
Step 31 - Assembling the knob 48 ..................................................................................
Step 32 - Mounting the print platform 48 .....................................................................
Step 33 - Haribo time! 49 .................................................................................................
Step 34 - Final check 49 ...................................................................................................
4. Electronics & Lid 51 ...........................................................................................................
Step 1 - Tools and bags for this chapter 52 ...................................................................
Step 2 - Tools and bags for this chapter 52 ..................................................................
Step 3 - Preparing parts from the package 52 .............................................................
Step 4 - Cable management parts preparation 53 ......................................................
Step 5 - Cable management 53 ......................................................................................
Step 6 - Cable management 54 ......................................................................................
Step 7 - UV LED parts preparation 54 ...........................................................................
Step 8 - Removing the cover 55 ......................................................................................
Step 9 - Mounting the UV LED assembly 56 ................................................................
Step 10 - Preparing the touchscreen parts 56 ..............................................................
Step 11 - Mounting the touchscreen assembly 57 ........................................................
Step 12 - Preparing the electronics 57 ...........................................................................
Step 13 - Glueing the thermal pad 58 ............................................................................
Step 14 - Inserting the electronics holder 58 ................................................................
Step 15 - Connecting both boards 59 .............................................................................
Step 16 - Connecting Wi-Fi & Speaker 59 ....................................................................
Step 17 - Mounting the electronics 60 ...........................................................................
Step 18 - Cable management parts preparation 60 ....................................................
Step 19 - Connecting the electronics 61 ........................................................................
Step 20 - Connecting the electronics 61 .......................................................................
Step 21 - Connecting the electronics 62 ........................................................................
3
Step 22 - Removing the protective film 62 ...................................................................
Step 23 - Preparing the print display parts 63 .............................................................
Step 24 - Inserting the print display in the printer 63 ................................................
Step 25 - Fixing the display in place 64 .........................................................................
Step 26 - Display cable holder parts preparation 64 ..................................................
Step 27 - Connecting the print display 65 ....................................................................
Step 28 - Connecting the touchscreen (new version) 65 ...........................................
Step 29 - Connecting the touchscreen (old version) 66 .............................................
Step 30 - Final check 66 ...................................................................................................
Step 31 - Cable management parts preparation 67 .....................................................
Step 32 - Final cable management 67 ...........................................................................
Step 33 - Preparing the cover parts 67 ..........................................................................
Step 34 - Connecting the power button and USB 68 .................................................
Step 35 - Assembling the cover 68 ................................................................................
Step 36 - Preparing resin tank parts 69 ........................................................................
Step 37 - Preparing the resin tank frame 69 ................................................................
Step 38 - Preparing the FEP film 69 ..............................................................................
Step 39 - Preparing the resin tank frame 70 ................................................................
Step 40 - Inserting the torx screws 70 ...........................................................................
Step 41 - Assembling the resin tank 71 ..........................................................................
Step 42 - Assembling the resin tank 71 .........................................................................
Step 43 - Installing the resin tank 72 .............................................................................
Step 44 - Preparing acrylic lid parts 72 .........................................................................
Step 45 - Mounting the acrylic lid 72 .............................................................................
Step 46 - Returning the print platform 73 .....................................................................
Step 47 - Haribo time! 73 ..................................................................................................
Step 48 - Final check 74 ...................................................................................................
5. Preflight check 75 ..............................................................................................................
Step 1 - Printer calibration 76 ..........................................................................................
Step 2 - Unboxing Wizard 76 ...........................................................................................
Step 3 - Setup Wizard 1-2 76 ...........................................................................................
Step 4 - Setup Wizard 3 76 ..............................................................................................
Step 5 - Setup Wizard 4 77 ..............................................................................................
Step 6 - Display test 77 .....................................................................................................
Step 7 - Setup Wizard 5 77 ..............................................................................................
Step 8 - Setup Wizard 6 78 ..............................................................................................
Step 9 - Setup Wizard 7 78 ..............................................................................................
Step 10 - Setup Wizard 8 78 ............................................................................................
Step 11 - Setup Wizard 9 78 .............................................................................................
Step 12 - Setup Wizard 10 78 ..........................................................................................
Step 13 - Calibration 1 79 ..................................................................................................
Step 14 - Calibration 2 79 .................................................................................................
Step 15 - Calibration 3 79 .................................................................................................
Step 16 - Calibration 4 79 .................................................................................................
Step 17 - Calibration 5 80 .................................................................................................
Step 18 - Calibration 6 80 ................................................................................................
Step 19 - Calibration 7 80 .................................................................................................
Step 20 - Calibration 8 81 ................................................................................................
Step 21 - Calibration 9 81 .................................................................................................
Step 22 - Calibration 10 81 ...............................................................................................
Step 23 - Calibration 11 81 ................................................................................................
Step 24 - Finalising the calibration 81 ...........................................................................
Step 25 - Haribo time! 82 .................................................................................................
Step 26 - Quick guide for your first prints 82 ...............................................................
4
Step 27 - Printable 3D models 82 ...................................................................................
Step 28 - Prusa knowledge base 83 ...............................................................................
Step 29 - Join PrusaPrinters! 83 ......................................................................................
Manual changelog SL1 84 ...................................................................................................
Step 1 - Versions history 85 .............................................................................................
Step 2 - Changes to the manual (1) 85 ...........................................................................
Step 3 - Changes to the manual (2) 85 ..........................................................................
Original Prusa SL1 kit assembly 5
1. Introduction
1. Introduction
6Original Prusa SL1 kit assembly
STEP 1 All the required tools are included
The assembly kit includes:
Cutting pliers
Wrench
Torx key
Allen keys
IPA cleaning pad
Cardboard
The cardboard will be used to make the assembly easier and protect some parts of
the printer. Don't throw it away until the printer is fully built! Handle it carefully the
edges might be sharp.
STEP 2 Boxes and bags are labelled
All the boxes and bags including
parts for the build are labelled.
Number (or numbers) in the header
tells you for which chapter you'll
need that bag (or box).
Note the displayed label of the bag
is just an example, the content of
the bag might differ. This is valid
for the entire assembly manual.
1. Introduction
Original Prusa SL1 kit assembly 7
STEP 3 Use labels for reference
Most of the labels are scaled 1:1 and
can be used to identify the part :-)
For the most common screws, nuts
and PTFE tubes you can also use
the enclosed letter, which contains
Prusa Cheatsheet on the other side.
You can
help.prusa3d.com/cheatsheet from
our site. Print it at 100 %, don't
rescale it, otherwise, it won't work.
Note the displayed label of the bag
is just an example, the content of
the bag might differ. This is valid
for the entire assembly manual.
STEP 4 Spare bag
Every type of fastener is included in
a separate special bag.
If you lose a screw when building,
use one from this bag.
Note the displayed label of the
spare bag is just an example, the
content of the bag might differ.
STEP 5 View high resolution images
When you browse any guide on
help.prusa3d.com, you can view the
original images in high resolution
for clarity.
Just hover your cursor over the
image and click the Magnifier
button ("View original") in the top
left corner.
The picture is used as an example.
1. Introduction
Original Prusa SL1 kit assembly 9
STEP 7 Unpacking the SL1 kit
The SL1 kit parts are separated into several layers of protective foam, which mostly
comply with the chapters. However, some parts had to be moved into different
layers due to their dimensions.
The manual will inform you, which layers are necessary for each chapter.
You can remove all parts from the protective foams, but:
Keep all electronics in the ESD bags until you have to mount or plug them to
the printer.
Make sure the print platform is protected from scratches. Place it on a soft
cloth.
Protect the acrylic lid against possible scratches.
To increase protection of the printer parts, the order of the foams was changed.
However, it doesn't affect the assembly procedure. Parts moved together with
foams.
1. Introduction
10 Original Prusa SL1 kit assembly
STEP 8 Important: Electronics protection
WARNING: Make sure to protect the electronics against electrostatic discharge
(ESD). Always unpack the electronics right before you need them!
Here are some tips to prevent damage to the electronics:
Keep the electronics inside the ESD bag right until you are asked to install
them.
Always touch the sides of the board while manipulating with it. Avoid touching
the chips, capacitors and other parts of the electronics.
Before you touch the electronics use any conductive (steel) structure nearby to
discharge yourself.
Be extra cautious in the rooms with carpets, which are a source of
electrostatic energy.
Clothes from wool and certain synthetic fabrics can easily gather static
electricity. It is safer to wear cotton clothing.
1. Introduction
Original Prusa SL1 kit assembly 11
STEP 9 Regular rewards are crucial!
Building the SL1 printer is a
challenge unlike any other and you
should treat yourself for every
milestone you reach. That is why a
bag of Haribo Bears is included!
After you finish each stage of this
assembly guide, you will be given a
specific amount of sweets to eat.
Don't eat all the bears before you
start or at once! Not following
instructions will have serious
consequences, we are currently
assembling Prusa Haribo tactical
squad for this matter.
Eating more or fewer bears than
prescribed in the manual might lead
to fatigue or nausea. Please consult
a professional in the closest candy
store.
Hide the Haribo for now! From our
experience, an unattended bag with
sweets tends to suddenly
disappear. We are still investigating
this phenomenon.
All information provided in this step
is based on a long-term very serious
research study ;)
STEP 10 How to successfully finish the assembly
1. Introduction
12 Original Prusa SL1 kit assembly
Always read all the instructions at
the current step first, it will help
you to understand, what you need
to do. Don't cut or trim unless you
are told to!!!
Don't follow pictures only! It is not
enough, the written instructions are
as brief as they could be. Read
them.
Read the comments from the other
users, they are a great source of
ideas. We read them too and based
on your feedback, we improve the
manual and the entire assembly
process.
Use a reasonable force, the printed
and aluminium parts are tough, but
not unbreakable. If it doesn't fit,
check your approach twice.
Eat the gummy bears as
instructed! Disobedience won't be
tolerated :D
Most important: Enjoy the build,
have fun. Cooperate with your kids,
friends or partners. However, we
take no responsibility for possible
fights ;)
You can use your own tools (e.g.
pliers for easier screw insertion). In
the case of electronic screwdriver,
make sure the torque is set to low
and proceed carefully.
READY? You can start by
assembling the printer in the next
chapter - 2. Base & Tower
Original Prusa SL1 kit assembly 13
2. Base & Tower
2. Base & Tower
14 Original Prusa SL1 kit assembly
STEP 1 Tools and bags for this chapter
For the chapter, please prepare:
2.0mm Allen key
2.5mm Allen key
3.0mm Allen key
Wrench
Bag 2. Fasteners
Bag 2. Accessories
Note that the content of the depicted labels in this manual might differ from the
ones in the package.
STEP 2 Preparing parts from the package
You will find parts for this chapter in the following protective foams:
First layer note that this layer includes also cardboard, which will be used
during the assembly. Don't throw it away ;)
Second layer includes parts for the majority of this chapter.
Fasteners for the entire printer are included in the second layer, see the picture.
Remember to keep all electronics in their ESD bags, until you have to assemble
them to the printer.
WARNING: Handle the tower with care!!! If you drop it or skew it, it will affect the
print quality.
2. Base & Tower
Original Prusa SL1 kit assembly 15
STEP 3 Preparing parts from the package
The blower fan holder (steel sheet)
is placed in the protective foam
number 3.
STEP 4 Tower and PSU parts preparation
For the following steps, please prepare:
Back plate (1x) including the cardboard
Tower (1x)
SL1 PSU (1x)
M4x8 screw (4x)
M3x18 screw (3x)
M3x5 screw (2x)
M4w serrated lock washer (1x)
2. Base & Tower
16 Original Prusa SL1 kit assembly
STEP 5 Arranging the back plate
Due to the safety reasons, the back plate is rotated during the transport. Let's rotate
it back to the "assembly position".
Flip the back plate 180 °. The notch must be facing up.
The correct position of the back plate for the assembly. Make sure the "notch" is
facing up.
STEP 6 Connecting the tower
WARNING: Proper assembly of the tower is SUPER CRUCIAL. If you misalign the
tower, you will have issues with the prints. Follow the instructions and use the
included cardboard!
First, place the tower on the back plate like in the picture. See the four holes on
both parts, which have to match each other.
Rotate the tower on the back plate, then align the holes and insert two screws
M4x8 in the lower row. Don't tighten them yet!
Push the tower DOWN and to the RIGHT and then tighten:
First the screw on the left
Second the screw on the right
2. Base & Tower
Original Prusa SL1 kit assembly 17
STEP 7 Connecting the tower
Continue with the upper row, take the second pair of M4x8 screws.
Push the tower DOWN and to the RIGHT and then tighten:
First the screw on the left
Second the screw on the right with the M4w
Ensure all four screws are tightened properly, no wobble is allowed. Both parts
must act as one.
STEP 8 Connecting the SL1 PSU
IMPORTANT: Continue using the enclosed cardboard to have the back plated lifted
from the desk. The reason is that the power button on the PSU, which will be facing
down might get damaged.
PSU is mounted using three holes, check the first picture to see where is their
location.
Mount the PSU using three M3x18 screws. Tighten them all the way down.
Take the M3x5 screws and screw them in the back plate, 2-3x turns are enough.
We will slide a sheet in later on, so don't tighten them. Make sure each screw is
perpendicular to the back plate in both axes.
2. Base & Tower
18 Original Prusa SL1 kit assembly
STEP 9 Tower and PSU parts preparation
For the following steps, please prepare:
Bottom plate (1x)
Support (2x)
M3x8 screw (8x)
Adjustable foot (4x)
Don't install any foot before being told to, you would block yourself access to some
screws.
STEP 10 Mounting the bottom plate
Before we connect the bottom plate to the rest of the printer, let's find the groove,
which will be used to align both parts together.
Lift and slightly slide the current assembly to the edge of the cardboard to get
access to the lower edge of the back plate. Keep some space for adding the bottom
plate.
Place the side of the bottom plate with the groove on the back plate. Make sure
both parts are aligned properly and no wires are pinched.
Secure both parts together using four M3x8 screws.
2. Base & Tower
Original Prusa SL1 kit assembly 19
STEP 11 Mounting the supports
Before you mount the support, please take a closer look at:
The bottom plate, which has two special grooves for the supports. The picture is
showing just one, the second is on the opposite side and completely identical.
Each support has two holes with countersink from one side, this side has to be
facing outwards from the printer.
The other side of the support is without countersink and must be facing inwards to
the printer.
All the holes are symmetrical, therefore apart from the countersink holes, you can
rotate them either way.
Take the first support and mount it to the bottom plate. Ensure the countersink
holes are facing outwards, then secure the support using two M3x8 screws from
the bottom.
Check the bottom plate and support outer surfaces are aligned. If not, release the
screws a little bit and readjust the support. Then tighten the screws again.
Continue in the next step...
2. Base & Tower
20 Original Prusa SL1 kit assembly
STEP 12 Mounting the adjustable feet
Install the second support from the other side of the printer. Again, ensure the
countersink is facing outwards and secure the support using two M3x8 screws.
Check the bottom plate and support outer surfaces are aligned. If not, release the
screws and readjust the support. Then tighten the screws again.
Turn the bottom of the printer towards you and locate the holes for the adjustable
feet.
Screw the adjustable feet all the way in.
Now you can place the printer on its feet and remove the cardboard. However, keep
it for later use.
STEP 13 Preparing PSU cables
For the following steps, please
prepare:
Power panic cable (1x)
Power cable (1x)
STEP 14 Connecting the cables
Connect both cables to the PSU
and guide them to the left side of
the printer. Cables are symmetrical,
use any side with the connector.
See the holes, which will be used
later on to mount the reflector.
Guide the cable from the tower
motor in the indicated direction.
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