Geeetech Prusa I3 X Instruction Manual

Building Instructions of Geeetech Prusa I3 X
(Version 01-22-2016)

CONTENT
Safety Instructions.....................................................................................................................3
Preparation................................................................................................................................4
Unfold the box and check the package list................................................................................1
1. Assemble the threaded rods of Y axis ...................................................................................2
2. Assemble the front and back support of y axis......................................................................3
3. Mount theY motor................................................................................................................5
4. Belt driving wheel.................................................................................................................8
5. Build the print platform.......................................................................................................15
6. Mount theY belt..................................................................................................................19
7. Left Z motor mount.............................................................................................................20
8. Right Z motor mount...........................................................................................................24
9. Side panel assembly............................................................................................................27
10. Main frame assembly........................................................................................................28
11. Fan mount .........................................................................................................................30
12. Assemble the Z motors......................................................................................................30
13. Assemble the left end of the X axis（motor end).............................................................32
14. Assemble the right end of the X axis. (X idler).................................................................44
15. Assemble the extruder carriage.........................................................................................51
16. Assemble the the X&Z axis ..............................................................................................55
17. Assemble the X motor.......................................................................................................57
18. Add the belt.......................................................................................................................58
19. Mount the extruder............................................................................................................61
20. Mount the LCD panel .......................................................................................................62
21. Mount the control board....................................................................................................64
22. Mount the building platform.............................................................................................65
23. Mount the Y endstop.........................................................................................................66
24.Mount the power supply unit (PSU ) and the socket..........................................................67
25 Wiring ................................................................................................................................72
Step1. Check the subdivision of stepper motor...............................................................73
Step2. Plug stepper motor driver.....................................................................................74
Step3. Connect wires for motors. 1) Connect wires for X-axis motor. ...........................76
Step4. Connect heating wires..........................................................................................78
Step5. Connect wires for thermistor................................................................................80
Step6. Connect wires for endstop. 1) Connect wires for endstop of X-axis at X-Min....82
Step7. Connect wires for Fan. 1) Connect fan for control board at FAN3......................83
Step8. Connect wires for LCD panel...............................................................................85
Step9. Connect wires for power input.............................................................................86
Step 10. Connect the wires to the PSU............................................................................87
26. Mount the filament spool..........................................................................................................87

Safety Instructions
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 detailed
instruction to help you assemble it easily.
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 the entire
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
can run about 230°C, the heated bed runs 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 unattended, 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.

Preparation
1. Unpack the kit and check if all parts are in the box and check the condition of each
part, there might be some damage during shipping. To help you with this, there is
BOM in the box and each bag was labeled with part number.
2. Contact our customer service immediately by email or through the website if you
find any missing or damaged parts. And on the bottom of the BOM, there is a
signature of reviewer, please take a picture of it and attach the picture in your mail.
3. Read through each chapter of these instructions to gain an over-all idea of
what is involved and how long it might take, before starting on the work
described. Or you can watch the video here.
4. Before you start, you can put all the part in order to save your time especially those
screws and nuts. Do not mix them up.
5. Ensure you have the necessary skills to carry out the work, or enlist the help of
someone who does.
6. Work on a big firm table or bench in a clean dry well-lit area.
7. This kit contains tiny parts; please keep them away from kids under 3.
8. Ask for help if you run into any problems - our contact details are on the website
and we will always do our best to resolve any problems encountered.
9. If you find any problem about the videos, such the part number is wrong, please refer to this
instruction, videos are just for reference, we may do some tiny changes.

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Unfold the box and check the package list
Unfold the package and take all the parts out to check the condition of the items.
* All the acrylic plate has been etched with part ID and the plate is covered with a
sheet of paper, you need to tear them off.
* The part ID is corresponding to the number labeled on the bag of every part. Some
parts may not have label, you can refer to the pictures on the package list.

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1. Assemble the threaded rods of Y axis
Part name
Part ID
Required number
pic
450mm threaded
rod
No.5
2
M10 washer
No.9
8
M10 hex nut
No.13
8
M10 spring washer
No.10
6
Connecting fender
No.A14
2
Thread the nuts and washers into the two M10 threaded rods separately. The order
should be:
1) Thread the acrylic fender (Y plate connecting plate) in the middle.
2) Thread the M10 washer>M10 nut >M10 nut >
M10 nut <M10 nut < M10 spring washer<M10 washer in turn on the left
3) Thread theM10 washer < M10 spring washer < M10 nut < M10 nut< M10 spring
washer < M10 washer in turn on the right

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Watch the Video here.
2. Assemble the front and back support of y axis.

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Thread the rod to the plate, screw up the threaded rods and plate with M10 nut and
M10 washer at both end.
You don’t have to tighten it because you need to adjust the distance between the front
and rear plate later when you assemble the side panel.
Part name
Part ID
Required number
pic
M10 washer
No.9
4
M10 hex nut
No.13
4
Y axis front support
No.A9
1
Y axis front support
No.A10
1
Y axis rear support
No.A11
1
Y axis rear support
No.A12
1

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(this picture is just for reference, the plates are not exactly the same as that for I3 X)
* Tips:
the Y-axis must be a rectangle, that is the rods on both side should be parallel, so is
the front and back plate. Otherwise it will cause obstruction for the belt later. You can
use a Digital Caliper to measure.
You can watch the video here.
3. Mount the Y motor
Part name
Part ID
Required number
pic
stepper motor
No.63
1

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Y motor holder
No.A13
1
M3 x12mm screw
No.22
3
M3 x 20 mm screw
No.24
2
M3 square nut
No.16
2
Pulley
No.42
1
Step1. Mount the pulley on the motor shaft, one of the screws should be screwed on
the cross section of the shaft. Screw it tightly.
Step2. Then screw the motor on the block plate with 3 M3 x 12 screws .

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Step3.Insert the motor holder into the slot; you may need to use a little strength to do
this.
Fix the holder plate with 2 M3 x 20mm screws and M3 square nut.
*be careful in case the Acrylic break down.

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You can watch the video here.
4. Belt driving wheel
Part name
Part ID
Required number
pic
Driven wheel
holder
No.40
1
Ball Bearing
No.35
2
Driving wheel
No.37
1
M3 x20mm screw
No.24
3
M4 x 25mm screw
No.31
2
M4 locking nut
No.14
2

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wing nut
No.15
1
Step 1. Thread the M3 x 20 screw through the top hole on the drive wheel holder.
Step 2. Pick up 2 MR84zz ball bearings. Insert 1 MR84zz ball bearings into both
ends of the drive wheel .

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Step 3.Place the drive wheel in to the drive wheel holder and fix it in place with an
M4 x25 screw and M4 washer. Lock the other end with a M4 lock nut . You may need
a wrench to tighten M4 locking nut.

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*Note: Do not screw it too tightly as it may restrict the free movement of the drive
wheel. It is important that you leave enough room for the wheel to turn freely.
Repeat the above steps to make another driving wheel using the M3x50mm screws
instead for X axis belt driving.

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Watch the video here.
Step3. Mount the assembled bearing holder onto the front support plates. And screw it
with a wing nut later.

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5. Build the print platform
Part name
Part ID
Required number
pic
Building platform
support
No.A15
1
Belt mount
No.41
1
M4 x 16mm screw
No.30
16

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M4 washer
No.8
16
PCS8UU linear
bearing
No.36
4
M3 x12mm screw
No.22
2
M3 washer
No.7
2
L420mm smooth
rod
No.3
2
locking ring
No.32
2
M4Hex Nut
No.12A
16
Step1. Mount the belt mount at the middle of the building platform support with two
M3 x12mm screw and M3 washer.