Notice:

1.This kit contains tiny parts; please keep them away from kids under 3.

2.This building instruction applies to both Geeetech Acrylic Prusa I3 pro and pro B.

3.Building and operating 3D printer involves electricity, so all necessary precautions should be taken and adhered to.

4.Building a 3d printer requires a certain amount of handling ability and some common sense and working principle of 3D printer.

With this build instruction in hand; you can finish the assembly easily.

1 Unfold and check the package
2 Assemble Y axis (the bottom part of the chassis)
3 Assemble Y - Z axis
4 Mount the fan
5 Assemble the right and left side panel
6 Assemble the Z axis (the vertical axis)
- 6.1 Assemble the Z-axis bottom mount
- 6.2 Assemble the 2 Z motors
7 Assemble the X axis (the horizontal axis)
- 7.1 Assemble the X-Axis Idler
- 7.2 Assemble the X-axis smooth rod and the X-axis ends
8 Mount the extruder on the X axis
9 Assemble the X-Z axis
10 Mount the end stops
11 Mount the LCD panel frame
12 Mount the filament spool
13 Mount the PSU
14 Mount the control board on the left side panel

Unfold and check the package

Unfold the package and take all the parts out to check the condition of the items. As you can see, all the parts are packed very carefully.

·All the acrylic plate has been etched with part ID.

Tips:

Before assembly, you are advised to put all the parts, especially the screws and nuts in order, which will save you a lot of time looking for the required parts.
The part ID is corresponding to the number labeled on the bag of every part.

Assemble Y axis (the bottom part of the chassis)

Assemble the rods of a Y axis

Step1. Assemble the 2 threaded rods.

Required parts	Required number	Part ID
M10 threaded rod	2	NO.5
Acrylic Fender	2	NO.A14
M8 spring washer	6	NO.18
M10 washer	8	NO.9
M10 nut	8	NO.12

Thread the nuts and washers into the two M10 threaded rods separately. The order should be:

M10 washer > M8 spring washer >M10 screw > M10 screw > M10 washer > acrylic fender > M10 washer > M8 spring washer > M10 screw > M10 screw > M8 spring washer > M10 washer

Step2. Assemble the 2 smooth rods

Required parts	Required number	Part ID
M8 smooth rod	2	NO.3
LM8UU Linear bearings	4	NO.39

Slide 2 bearings on each smooth rod. Before you slide the bearings please make sure they are clean.

Attach the front and rear Acrylic support plates of the rods

Required parts	Required number	Part ID
Acrylic plate(front)	2	NO.A9,A10
Acrylic plate(back)	2	NO.A11,A12
M10 washer	4	NO.9
M10 nut	4	NO.12

Slide the rods into the acrylic plate, Adjust the length so that the smooth rods fit snugly between the front and back piece.
Each corner gets a washer and a nut. Adjust the inner and outer nuts so that the end of the rod is flush with the outside M10 nut.
Do the same on all four corners.

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.

Assemble the Y idler

Required parts	Required number	Part ID
624ZZ Ball bearing(front)	2	NO.38
Y belt holder	1	NO.66
M3 x20 screw	1	NO.27
M3 wing nut	1	NO.15
M3 x25 screw	1	NO.35
M4 lock nut	1	NO.14

Step1. Thread the M3 x 20 screw through the Y idler piece.

Put the M4 x25 screw through the holes with the 624ZZ bearings in between. Lock the other end with a M3 nut.

Step2. Mount the assembled idler onto the front support plates. And screw it with a wing nut.
*Please leave enough room for the belt between the ball bearing and the screw.

Mount the Y motor

Required parts	Required number	Part ID
Y-axis motor block	1	NO.A13
Stepper motor	1	NO.76
pulley	1	NO.43
M3 x12 screw	3	NO.25
M3 x16 screw	2	NO.26
M3 square nut	2	NO.16

Step1. Mount the pulley on the motor shaft, one of the screws should be screwed on the cross section of the shaft. Do not screw too tight to turn smoothly.

Insert the motor block into the slot; you may need to use a little strength to do this. But be careful in case the Acrylic broke down. Then screw the motor on the block plate with M3 x 10 screws.

Build the printing platform

Required parts	Required number	Part ID
Printing platfrom	1	NO.A15
Acrylic fender	4	NO.A16
Y-axis belt mount	1	NO.67
Zip tie	4	NO.54
M3 x10 screw	2	NO.24
M3 x20 screw	8	NO.27
M3 nut	8	NO.11

Step1. Mount the belt mount on the bottom side of the platform with 2 M3 x 10 screws.

Step2. Mount the 4 Acrylic fenders on the platform with M3 x 20 screws and M3 nuts on the same side with the belt-mount.

Step3. Get the build platform plate zip-tied to the 4 linear bearings of Y- Axis.

*The belt-mount and the fenders are under the platform.

Step4. Mount the belt.

Required parts	Required number	Part ID
belt	1	NO.41
M3 x10 screw	2	NO.24
M3 washer	2	NO.7

Drill a hole on one end of the belt（the hole can be as the diameter of the M3 screw, leave enough margin ）
Fix it on the belt -mount with a M3 x 10 screw and washer.
Thread the belt through the pulley on the Y motor and the Y idler.
Drill a hole on the other end of the belt and fix it on the belt -mount with a M3 x 10 screw and washer.

Attach the heated bed

You can also attach the heated bed later.

Required parts	Required number	Part ID
Heat bed	1	NO.71
Borosilicate glass	1	NO.72
Heating wire	2	NO.51
Thermistor	1	Attached on the bed
Thermometry wire	2	NO.50
Wing nut	4	NO.15
Spring	4	NO.37
M3 x35 screw	4	NO.29
clamp	4	NO.52

Solder the heating wire on the edge of the bed.

Take out the 2-pin DuPont wire and take off one the adapter.

Solder the DuPont wire and the thermistor together.

Attach the DuPont wire and the thermistor on the bed with Kapton tape.

Mount the heat bed on the platform with 4 M3 x30 screws and wing nuts with springs in between. Clamp the heat bed and the glass sheet.

Assemble Y - Z axis

The main frame is held upright after the acrylic fender washers on the Y axis threaded rods. The front of the plate should be sticking out a lot further than the back. Screw up the frame to the threaded rod of Y-axis.

Required parts	Required number	Part ID
X-Z frame	1	NO.A1
Acrylic fender	2	NO.A12
M3 x20 screw	4	NO.27
M3 nut	4	NO.11

Mount the fan

Required parts	Required number	Part ID
Fan	1	NO.71
M3 x30 screw	4	NO.28
M3 lock nut	4	NO.13

Fix the fan on the right side of the frame with 4 M3 x 30 screw and lock nut. Mind the direction of the wires.

Assemble the right and left side panel

Required parts	Required number	Part ID
Acrylic left panel	1	NO.A2
Acrylic right panel	1	NO.A3
M3 x16 screw	8	NO.26
M3 square nut	8	NO.16

Screw up the X-Z frame and the side panel then connect the rear part of the Y axis and the side panel together. You may need to adjust the distance of the X-Z frame to the rear plate.

Assemble the Z axis (the vertical axis)

Assemble the Z-axis bottom mount

Required parts	Required number	Part ID
Z Motor fixed plate	2	NO.A4,A5
Z Motor support plate	4	NO.A6,A7
M3 x16 screw	8	NO.26
M3 square nut	8	NO.16

Screw up the acrylic plates with M3 x 16 screws and M3 square nuts.

*The right and left bottom mount are different; the left one has a mount for the Z end stop. Please look at the following picture.

Assemble the 2 Z motors

Required parts	Required number	Part ID
Stepper Motor	2	NO.76
M3 x12 screw	8	NO.25

Step1.Thread the wires of the motors through the holes

Step2. Screw up the motors with M3 x 12 screws.

Assemble the X axis (the horizontal axis)

Assemble the X-Axis Idler

Required parts	Required number	Part ID
624ZZ Ball bearing	2	NO.38
X belt holder	1	NO.66
M3 x30 screw	1	NO.28
M4 x25 screw	1	NO.35
M4 lock nut	1	NO.14
M3 Wing nut	1	NO.15
X-axis end	2	NO.P2
LM8UU linear bearing	2	NO.40

Put the screw through the printed Y idler piece, with the 624ZZ bearings in between. Lock the other end of a M3 nut.

Mount the assembled idler into the X-axis end. Lock it up with a wing nut. Here, you can insert the linear bearing into the end.

Insert a linear bearing into the other end of X-axis.

Assemble the X-axis smooth rod and the X-axis ends

Required parts	Required number	Part ID
370mm smooth rod	2	NO.2
LM8UU linear bearing	2	NO.40
Brass nut	2	NO.17
M3 x16 screw	8	NO.26
Screw locking fender	2	NO.19

Slide the two bearings into the two rods respectively. Then thread the two locking fender into the right end of both rods.

Thread the two rods into the two X-axis ends and then mount the brass nut under both ends.

Mount the extruder on the X axis

Thread the zip-tie through the extruder bracket

Required parts	Required number	Part ID
belt bracket	1	NO.P3
Zip tie	4	NO.54

Step1. Mount the X-axis belt bracket on the smooth rods. As you can see from the picture, the two linear bearings should be placed into the two slot of the bracket. Tie them up with zip ties.

Mount the extruder support

Required parts	Required number	Part ID
Extruder bracket	1	NO.P4
M4 x16 screw	2	NO.34
M4 nut	2	NO.11A

1.Put the 2 M4 nut into the hole, as shown in the picture.

2. Screw up the belt bracket and the extruder support with two M4 x 16screws.

Mount the extruder

Required parts	Required number	Part ID
MK8 extruder	1	NO.80
MK8 assemble board	1	NO.65
M4 x12 screw	2	NO.34

This is the fully assembled MK8 extruder in the package.

Take the nozzle part and the bolt out.

Mount the aluminum plate under the extruder.

Then mount the assembled extruder on the extruder support. Use 2 M4 x 12 screws to fix. (the blue extruder support)

Mount the X-axis motor

Required parts	Required number	Part ID
Stepper motor	1	NO.76
Pulley	1	NO.43
M3 x8 screw	3	NO.23

Amount the X-axis belt

Required parts	Required number	Part ID
Belt	1	NO.42
Zip tie	2	NO.54

Thread the belt through the motor end. The belt is attached on the pulley.

Another end of the belt should be threaded through the belt holder on the right end of the X-axis.

*Pay attention to the tooth mesh of the belt and that on the bracket. Tie up both ends tightly.

Assemble the X-Z axis

Step1. Thread the threaded rod of Z axis through the following part. It would be easier to do it now.

Required parts	Required number	Part ID
L300 threaded rod	2	NO.4

Step2. Fix the two couplings on both of the threaded rod. And plug it on the motor shaft.

Required parts	Required number	Part ID
Couplings	2	NO.67

*Mind the opening of the couplings, the larger opening should be put into the shaft of the motor.

Step3. Put the assembled X-axis on the Z-axis. Then slide the smooth rod into the linear bearings.
Step4. Assemble the top mount of the Z-axis.

Required parts	Required number	Part ID
Z-axis top mount	2	NO.A8
M3 x16 screw	4	NO.26
M3 square nut	4	NO.16

Mount the end stops

Step 1.End stop of X-axis

Required parts	Required number	Part ID
End stop	1	NO.44
M2.5 x12 screw	2	NO.21

Step2. End stop of Y-axis

Required parts	Required number	Part ID
End stop	1	NO.45
M2.5 x16 screw	2	NO.22
M2.5 Hex nut	2	NO.10

Step3. End stop of Z-axis

Required parts	Required number	Part ID
End stop	1	NO.46
M2.5 x16 screw	2	NO.22

Mount the LCD panel frame

Required parts	Required number	Part ID
LCD 2004	1	NO.79
LCD frame	1	NO.A22
LCD frame holder	2	NO.A24
Acrylic washer	4	NO.A21
M3 x20 screw	6	NO.27
M3 nut	4	NO.11

Mount the filament spool

Required parts	Required number	Part ID
Filament side panel	3	NO.A17,18
M3 x16 screw	4	NO.26
M3 square nut	4	NO.16
PVC tube	2	NO.60,61

Mount the PSU

Required parts	Required number	Part ID
PSU	1	NO.74
M3 x10 screw	4	NO.24
M3 x20 screw	2	NO.27
M3 nut	2	NO.11
Power cable	1	NO.62

Mount the PSU on the right side panel with 3 M3 x 10 screws.
Then mount the AC socket with M3 x 20 screws.
You have to take off one end of the connectors to get both the power button and the power socket into the hole.

1. Mind the color of the wires. The wrong connection of the wire will cause serious damage to the PSU and even to the control board of the printer.

2. Pay attention to the switch on the right side of the PSU, there are two options of voltage: 110 V and 220V, choose according the standard in your country. As shown in the following picture.

Mount the control board on the left side panel

Example 1: Sanguinololu

Here we take the Sanguinololu as an example.

Step1, plug the jumper caps on the following pins of the board. (In the yellow circle)

* These caps are very tiny; do not throw them away inadvertently.

The jumper caps are packaged along with the board, do not lost them.

You need to plug 12 caps in all.

Step2. Stack the 4 A4988 on Sanguinololu

Step3. Stick the heat sink on the chip of the 4 A4988.

Step4, connect all the wires to the interfaces of the board

The referring wiring schematic diagram of Sanguinololu

* use the Dopont cable in the package to strech the wire of fan for extruder, you just need to connect the black and red one, leave the yellow one alone.

also you can refer to the board cover.

For more information about Sanguinololu, please visit the wiki page.

Note: when connect the other Y-motor, use the 4-pin M-F DuPont cable and pay attention to the directions of the wire. If you connect them reversely, the 2 Z motor will move in different directions.

Look at the colors of the wire.

Example 2: Ramps 1.4

Step1.Plug the jumper caps on ramps 1.4. You need 15 jumper caps in total.

Step2.Stack ramps 1.4 onto mega 2560.

Plug the 4 A4988 motor driver boards on ramps1.4; stick the heat sinks on the driver boards.

(one for X, one for Y, one for extruder, two for Z)

Mind the directions of the driver boards. You can see the “GND” on the board.

Wiring

The referring wiring schematic diagram of Ramps 1.4

1.Connect motors. X and Y motors are easier, here you need to notice the Z motor, you need two 4-pin DuPont cable to extend for 2 Z motors.

2.Connect the fan; both the fan for extruder and the main board are connected like this. As to the fan for extruder, you need another 2-pin DuPont cable to extend. Take off the adapters and plug the cable into the power port.