View source for Building Instructions of Geeetech Prusa I3 X

[[File:Prusa I3 X.jpg|500px]]

=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.

=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 plates have been etched with part ID and the plate is covered with a sheet of kraft 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.

[[File:2 unfold1.jpg|500px]]   [[File:2 unfold2.jpg|500px]]   [[File:2 unfold3.jpg|500px]]

==1. Assemble the threaded rods of Y axis==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>450mm threaded rod</center>||<center>53</center>||<center>2</center>
|-
|<center>M10 washer</center>||<center>33</center>||<center>8</center>
|-
|<center>M10 hex nut</center>||<center>A3</center>||<center>8</center>
|-
|<center>M10 spring washer</center>||<center>A4</center>||<center>6</center>
|-
|<center>Connecting fender</center>||<center>14</center>||<center>2</center>
|}

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 < M8 spring washer<M10 washer in turn on the left 

3) Thread theM10 washer < M8 spring washer < M10 nut < M10 nut< M8 spring washer < M10 washer in turn on the right

[[File:y axis1.jpg|500px]]

Watch the Video [https://www.youtube.com/watch?v=fdPp03HEaoA&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=1 here].

==2. Assemble the front and back support of y axis.==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M10 washer</center>||<center>No.9</center>||<center>4</center>
|-
|<center>M10 hex nut </center>||<center>No.13</center>||<center>4</center>
|-
|<center>Y axis front support</center>||<center>No.A9</center>||<center>1</center>
|-
|<center>Y axis front support</center>||<center>No.A10</center>||<center>1</center>
|-
|<center>Y axis rear support</center>||<center>No.A11</center>||<center>1</center>
|-
|<center>Y axis rear support</center>||<center>No.A12</center>||<center>1</center>
|}

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.
* 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 [https://www.youtube.com/watch?v=KRkM6vXSk5U&index=2&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==3.Mount the Y motor==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>stepper motor</center>||<center>No.63</center>||<center>1</center>
|-
|<center>Y motor holder</center>||<center>No.A13</center>||<center>1</center>
|-
|<center>M3 x12mm screw </center>||<center>No.22</center>||<center>3</center>
|-
|<center>M3 x 16mm screw</center>||<center>No.23</center>||<center>2</center>
|-
|<center>M3 square nut </center>||<center>No.16</center>||<center>2</center>
|-
|<center>Pulley</center>||<center>No.42</center>||<center>1</center>
|}

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.

[[File:3Y motor.jpg|500px]]

Step2. Then screw the motor on the block plate with 3 M3 x 12 screws .

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 16 screws and M3 square nut.

*be careful in case the Acrylic break down. 

You can watch the video [https://www.youtube.com/watch?v=LOEPbW1Em7Y&index=3&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==4.Y belt driving wheel ==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Driven wheel holder</center>||<center>No.40</center>||<center>1</center>
|-
|<center>624zz Ball Bearing</center>||<center>No.35</center>||<center>2</center>
|-
|<center>M3 x20mm screw</center>||<center>No.24</center>||<center>3</center>
|-
|<center>M4 x 25mm screw</center>||<center>No.31</center>||<center>2</center>
|-
|<center>M4 locking nut</center>||<center>No.16</center>||<center>2</center>
|-
|<center>wing nut</center>||<center>No.42</center>||<center>1</center>
|}

Step1. Thread the M3 x 20 screw through the bearing holder.

[[File:Acrylic Prusa I3 (8mm)pic8.jpg|500px]]

Step2. Put the M4 x25 screw through the holes with the two 624ZZ bearings in between. Lock the other end with a M4 lock nut. You may need a spanner to tighten locking nut.

[[File:Acrylic Prusa I3 (8mm)pic9.jpg|500px]]]

Step3. Mount the assembled bearing holder 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.

You can refer to the video [https://www.youtube.com/watch?v=0gv73mizAYk&index=4&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==5. Build the print platform==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Building platform support</center>||<center>No.A15</center>||<center>1</center>
|-
|<center>Belt mount</center>||<center>No.41</center>||<center>1</center>
|-
|<center>M4 x 16mm screw</center>||<center>No.30</center>||<center>16</center>
|-
|<center>M4 washer</center>||<center>No.8</center>||<center>16</center>
|-
|<center>SCS8UU linear bearing</center>||<center>No.36</center>||<center>4</center>
|-
|<center>M3 x12mm screw</center>||<center>No.22</center>||<center>2</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>2</center>
|}

Step1. Mount the belt mount at the middle of the building platform support with two M3 x12mm screw and M3 washer.

Step2. Mount the 4 SCS8UU linear bearings on the building platform support with two M4x16mm screw and M4 washer.

You can refer to the video [https://www.youtube.com/watch?v=71oZ9D2u8BU&index=5&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==6. Mount the Y belt==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Timing belt</center>||<center>No.39</center>||<center>1</center>
|-
|<center>M3 x8mm screw</center>||<center>No.21</center>||<center>2</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>2</center>
|}

Step1. Punch a M2.5 hole on one end of the belt（the hole can be as the diameter of the M2.5 screw , leave enough margin ）

Step2. Fix the belt on one side of the belt -mount with a M3 x 8 screw and washer.

Step3. Thread the belt around the pulley on the motor and the 624zz ball bearing.

*Tips: 
1. Before you drill your second hole, make sure to pull belt tightly to make sure to
 proper placement of hole for a tight belt, if it is too loose, it will hinder the move of the print platform.

2. Loosen the Y idler wing nut when tightening belt onto the Y belt mount [No. 67] in order to make securing the belt to the block easier. Be sure to tighten wing nut fully
 once done. 

Watch the video [https://www.youtube.com/watch?v=F403zKfdliY&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=6&spfreload=10 here].

==7.Left Z motor mount ==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M2.5 hex nut</center>||<center>No.11</center>||<center>2</center>
|-
|<center>M2.5x16mm screw</center>||<center>No.20</center>||<center>2</center>
|-
|<center>M3 x 16mm screw</center>||<center>No.23</center>||<center>3</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>3</center>
|-
|<center>end stop</center>||<center>No.52</center>||<center>1</center>
|-
|<center>Motor holder (left)</center>||<center>No.A4</center>||<center>1</center>
|-
|<center>Motor Holder support</center>||<center>No.A6</center>||<center>1</center>
|-
|<center>Motor Holder support</center>||<center>No.A7</center>||<center>1</center>
|-
|<center>Z endstop mount</center>||<center>No.A28</center>||<center>1</center>
|}

Step 1. Mount the endstop on the endstop mount with two M2.5 x 16screws and nut.

Step 2. Mount the assembled endstop mount on the A4 with M3 x 16mm screw and M3 Square nut.  

Step 3. Assemble the motor holder (left) and the motor holder support together, screw it up with 3 M3 x 16mm screw and M3 Square nut. 
 
Watch the video [https://www.youtube.com/watch?v=Ie5wg5JmTDY&index=7&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==8.Right Z motor mount ==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw </center>||<center>No.23</center>||<center>2</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>2</center>
|-
|<center>Motor holder (right) </center>||<center>No.A5</center>||<center>1</center>
|-
|<center>Motor Holder support</center>||<center>No.A6</center>||<center>1</center>
|-
|<center>Motor Holder support</center>||<center>No.A7</center>||<center>1</center>
|}

Assemble the motor holder ((right) and the motor holder support together, screw it up with 3 M3 x 16mm screw and M3 Square nut. 

Watch the video [https://www.youtube.com/watch?v=LLdMKBgB7OE&index=8&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==9.Two Z motor mount assembled to the main frame(A1)==
{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw </center>||<center>No.23</center>||<center>6</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>6</center>
|-
|<center>Main frame </center>||<center>No.A1</center>||<center>1</center>
|}

Mount the to assembled Z motor mount to A1 with M3 x 16mm screw and M3 Square nut.

*Be very careful here, if you can not insert it into the hole you can loose the screw on the motor mount and try again. 

Watch the video [https://www.youtube.com/watch?v=zPIu1G_kCkk&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=9 here]. 

==10.Side panel assembly ==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw </center>||<center>No.23</center>||<center>6</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>6</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>6</center>
|-
|<center>Side panel(left)</center>||<center>No.A2</center>||<center>1</center>
|-
|<center>Side panel(right)</center>||<center>No.A3</center>||<center>1</center>
|}

Fix the side panel on A1 with M3 x 16mm screw, M3 Square nut and M3 washer.

Watch the video [https://www.youtube.com/watch?v=1qaNmwH-Vt0&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=10 here].

==11.Main frame assembly==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw </center>||<center>No.23</center>||<center>2</center>
|-
|<center>M3 x 20mm screw</center>||<center>No. 24</center>||<center>4</center>
|-
|<center>M3 hex nut</center>||<center>No. 2</center>||<center>4</center>
|-
|<center>M3 square nut</center>||<center>No.16</center>||<center>6</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>4</center>
|}

Step 1. Thread the assembled Y axis into the main frame(A1), put the main frame between the Connecting fender and the M10 nut. The Connecting fender is at the front part of the Y axis.
Step 2. Connect the side panel to the rear support plate, screw it up with M3 x 16mm screw and M3 square nut.
Step 3. Fix the connecting fender to A1 with M3 x 20mm screw and M3 hex nut.

Watch the video [https://www.youtube.com/watch?v=PRKASrHZm0g&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=11 here].

==12.Fan mount ==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 25mm screw </center>||<center>No. 25</center>||<center>4</center>
|-
|<center>M3 hex nut</center>||<center>No. 2</center>||<center>4</center>
|-
|<center>Fan</center>||<center>No.56</center>||<center>1</center>
|}

Mount the fan on the left side of the A1.
Watch the video [https://www.youtube.com/watch?v=TP0GqXsbpCs&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=12 here].

==13.Assemble the left end of the X axis（motor end)==

For the whole process of assembly of this part, please refer [https://www.youtube.com/watch?v=e2DigDgKaYg&index=13&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

Step 1. Mount the Z-axis nut.

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No. 23</center>||<center>4</center>
|-
|<center>M3 washer</center>||<center>No. 7</center>||<center>4</center>
|-
|<center>Z-axis nut</center>||<center>No.17</center>||<center>1</center>
|-
|<center>Left bearing bottom plate</center>||<center>No.A18</center>||<center>1</center>
|}

Mount the Z nut on the A 18 from bottom to up, fix with M3 x 16mm screw and
M3 washer. 


[[File:4 fun motor.jpg|500px]]

[[File:4 x aixs2.jpg|500px]]

Step 2. Mount the endstop trigger.


{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 30mm screw</center>||<center>No. 26</center>||<center>2</center>
|-
|<center>M3 x 50 screw</center>||<center>No.28</center>||<center>1</center>
|-
|<center>M3 hex nut </center>||<center>No. 12/center>||<center>4</center>
|-
|<center>Spring</center>||<center>No.34</center>||<center>1</center>
|-
|<center>Endstop holder </center>||<center>No.A21</center>||<center>1</center>
|-
|<center>Endstop holder</center>||<center>No.A22</center>||<center>1</center>
|}

1.Thread a M3 hex nut to the M3 x 50 screw.

2.Thread the A22 to the M3 x 50 screw.

3.Thread the spring to the the M3 x 50 screw through the hole of A22.

4.Thread another M3 hex nut to the M3 x 50 screw, compress the spring into the hole, you need to use some force.

5.Thread A21 to the M3 x 50 screw, attach to A22, then mount them on the Left bearing bottom plate (No.A18 ).

6.Fix it up with two M3 x 30mm screws and M3 hex nuts.

[[File:5 endstop1.jpg|500px]]

[[File:5 endstop2.jpg|500px]]

[[File:5 endstop3.jpg|500px]]

[[File:5 endstop4.jpg|500px]]

Step 3. Mount the endstop

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M2.5 x 16mm screw</center>||<center>No. 20</center>||<center>2</center>
|-
|<center>M2.5 hex nut</center>||<center>No. 11</center>||<center>2</center>
|-
|<center>End stop</center>||<center>No.52/center>||<center>1</center>
|-
|<center>Left bearing top plate</center>||<center>No.A17</center>||<center>1</center>
|}

Mount the endstop on the Left bearing top plate with two M2.5 x 16mm screw and 
M2.5 hex nut 

[[File:5 endstop5.jpg|500px]]

Step 4. Assemble the X left end together

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No. 23</center>||<center>8</center>
|-
|<center>M3 Square nut</center>||<center>No. 16</center>||<center>8</center>
|-
|<center>X motor holder</center>||<center>No.A 16/center>||<center>1</center>
|-
|<center>X axis rod holder (left)</center>||<center>No.A 19</center>||<center>2</center>
|-
|<center>X axis belt holder</center>||<center>No.A 20</center>||<center>1</center>
|}

[[File:5 endstop6.jpg|500px]]
* Note the direction

Step 5. Fix the linear bearing SCS8LUU.

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>linear bearing SCS8LUU</center>||<center>No. 37</center>||<center>1</center>
|-
|<center>M4x16mm screw</center>||<center>No. 30</center>||<center>4</center>
|-
|<center>M3 x 16mm screw</center>||<center>No. 23/center>||<center>4</center>
|-
|<center>M3 Square nut</center>||<center>No. 16</center>||<center>4</center>
|}

Mount the SCS8LUU on X motor holder with 4 M4x16mm screws. And fix the top and bottom plate with M3 x 16mm screw and M3 Square nut.

[[File:5 endstop7.jpg|500px]]

[[File:5 endstop8.jpg|500px]]

* Note the direction

==14.Assemble the right end of the X axis. (X idler)==

For the whole process of assembly of this part, please refer [https://www.youtube.com/watch?v=vYQjq9bkWtw&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=14 here].

Step 1. Mount the Z axis nut on A24

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No. 23</center>||<center>4</center>
|-
|<center>M3 washer </center>||<center>No. 7</center>||<center>4</center>
|-
|<center>Z-axis nut</center>||<center>No.17/center>||<center>1</center>
|-
|<center>Right bearing top/bottom plate</center>||<center>No.A24</center>||<center>1</center>
|}

Mount the Z axis nut on A24 with 4 M3 x 16mm screw and M3 washer.

[[File:6 z aixs1.jpg|500px]]

* Note the direction

[[File:6 z aixs2.jpg|500px]]

Step 2. Mount A25 and A26 on A23 

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No. 23</center>||<center>4</center>
|-
|<center>M3 Square nut</center>||<center>No. 16</center>||<center>4</center>
|-
|<center>Right bearing holder</center>||<center>No.A23</center>||<center>1</center>
|-
|<center>X axis rod holder(right)</center>||<center>No.A25</center>||<center>1</center>
|-
|<center>X axis driving wheel support  holder</center>||<center>No.A26</center>||<center>1</center>
|}

[[File:6 z aixs3.jpg|500px]]

[[File:6 z aixs4.jpg|500px]]

Step 3. Mount the right bearing top and bottom plate.

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No. 23</center>||<center>4</center>
|-
|<center>M3 Square nut</center>||<center>No. 16</center>||<center>4</center>
|-
|<center>Right bearing holder</center>||<center>No.A23</center>||<center>1</center>
|}

[[File:5endstop7.jpg|500px]]

Step 4. Fix the linear bearing SCS8LUU.

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>linear bearing SCS8LUU</center>||<center>No. 37</center>||<center>1</center>
|-
|<center>M4x16mm screw</center>||<center>No. 30</center>||<center>4</center>
|}

Mount the SCS8LUU on Right bearing holder with 4 M4x16mm screws.

[[File:5 endstop8.jpg|500px]]

==15.Assemble the X and Z motors.==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>stepper motor</center>||<center>No.63</center>||<center>3</center>
|-
|<center>M3 x12mm screw</center>||<center>No.22</center>||<center>12</center>
|-
|<center>Pulley</center>||<center>No.42</center>||<center>1</center>
|}

Mount the X motor

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.

[[File:3Y motor.jpg|500px]]

Step2. Then screw the motor on A16 plate with 4 M3 x 12 screws .

Mount the Z motor

Step1.Thread the wires of the motors through the holes on the bottom of A1.

[[File:9.z motor1.jpg|500px]]

Step2.Screw up the motors with 4 M3 x 12 screws. Do the same with the other Z motor.

For detailed assembly process, please watch [https://www.youtube.com/watch?v=jznvQ0em7xU&index=15&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==16. Assembly of the single extruder carriage ==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No.23</center>||<center>6</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>6</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>10</center>
|-
|<center>M3x12mm screw</center>||<center>No.22</center>||<center>2</center>
|-
|<center>M3 hex nut</center>||<center>No.12</center>||<center>2</center>
|-
|<center>belt mount</center>||<center>No.41</center>||<center>1</center>
|-
|<center>X axis bearing support plate</center>||<center>No.A 29</center>||<center>1</center>
|-
|<center>Extruder Bracket</center>||<center>No.A30</center>||<center>1</center>
|-
|<center>extruder bracket support</center>||<center>No.A31</center>||<center>2</center>
|-
|<center>SCS8UU  Linear Bearing</center>||<center>No.36</center>||<center>3</center>
|-
|<center>M4x16mm screw</center>||<center>No. 30</center>||<center>12</center>
|-
|<center>Extruder</center>||<center>No. 61</center>||<center>1</center>
|-
|<center>M4x12mm Screw</center>||<center>No.29</center>||<center>1</center>
|}

Step 1. Mount the belt mount on the back of the X axis bearing support plate(No.A 29) with 2 M3x12mm screws and lock it up with M3 hex nut.

Step 2.mount the 3 SCS8UU Linear Bearing on the back of the X axis bearing support plate(No.A 29) with M4x16mm screws.

Step 3. Mount the 2 extruder bracket support (No.A31) under the Extruder Bracket(No.A30) with 2 M3 x 16mm screw and M3 Square nut.

Step 4. Connect the Extruder Bracket(No.A30) to X axis bearing support plate(No.A 29) with 2 M3 x 16mm screw and M3 Square nut.
Step 5.  Thread the extruder into the bracket and fix it up with 2 M4x12mm Screws.

For detailed assembly process, please watch [https://www.youtube.com/watch?v=T8XBf2NnIvc&index=16&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

[[File:10.extruder carriage1 .jpg|500px]]

==17. X belt driving wheel ==


{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Driven wheel holder</center>||<center>No.40</center>||<center>1</center>
|-
|<center>624zz Ball Bearing</center>||<center>No.35</center>||<center>2</center>
|-
|<center>M3 x50mm screw</center>||<center>No.28</center>||<center>3</center>
|-
|<center>M4 x 25mm screw </center>||<center>No.31</center>||<center>2</center>
|-
|<center>M4 locking nut</center>||<center>No.16</center>||<center>2</center>
|-
|<center>wing nut</center>||<center>No.42</center>||<center>1</center>
|}

Step1. Thread the M3 x 50 screw through the bearing holder.

[[File:Acrylic Prusa I3 (8mm)pic8.jpg|500px]]]

Step2. Put the M4 x25 screw through the holes with the two 624ZZ bearings in between. Lock the other end with a M4 lock nut. You may need a spanner to tighten locking nut.

[[File:Acrylic Prusa I3 (8mm)pic9.jpg|500px]]]

Step3. Mount the assembled bearing holder onto the RIGHT end of X axis later when assemble the belt. And screw it with a wing nut. 
*Please leave enough room for the belt between the ball bearing and the screw.

==18. Assemble the the X axis together and add the belt==

Watcht the video [https://www.youtube.com/watch?v=qYIPvOokByY&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=19 here] first, please pay attention to the dirctions of each part.


Assemble the the X axis together

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>L430mm smooth rod</center>||<center>No.2</center>||<center>2</center>
|-
|<center>locking ring</center>||<center>No.35</center>||<center>2</center>
|-
|<center>X axis Fender</center>||<center>No.A27</center>||<center>2</center>
|}

Step 1. Thread one end of the smooth rod into the hole on the X left end. 

Step 2. Continue to thread the rod into the Linear Bearing on the back of the extruder. 
Note the dirctions, (watch the video)

Step 3. Thread the locking ring on the two rods seprately and screw it up later.

Step 4. Thread the X axis Fender on the two rods seprately.

Step 5. Thread the X right end to another end of the rod.

The orders should be like this.

[[File:11 driving wheel 3.jpg|500px]]

Add the belt

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Timing belt</center>||<center>No.39</center>||<center>1</center>
|-
|<center>M3 x8mm screw</center>||<center>No.21</center>||<center>1</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>1</center>
|}

Step1. Punch a M2.5 hole on one end of the belt（the hole can be as the diameter of the M2.5 screw to drill instead, leave enough margin ）

Step2. Fix the belt on one side of the belt -mount with a M3 x 8 screw and washer.

Step3. Thread the belt around the pulley on the motor and the 624zz ball bearing we assembled just now.

[[File11 driving wheel 4.jpg|500px]]

*Tips: 
DO NOT rush to drill the second hole now, we are not sure about the length of the belt needed untill we assemble the X axis on the printer.

2. Loosen the Y idler wing nut when tightening belt onto the Y belt mount [No. 67] in order to make securing the belt to the block easier. Be sure to tighten wing nut fully
 once done. 

==19. Assemble the X axis on the printer==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>L322mm smooth rod</center>||<center>No.1</center>||<center>2</center>
|-
|<center>300mm threaded rod</center>||<center>No.4</center>||<center>2</center>
|-
|<center>Coupling</center>||<center>No.38</center>||<center>2</center>
|-
|<center>Z top mount</center>||<center>No.A8</center>||<center>2</center>
|-
|<center>M3 x 16mm screw</center>||<center>No.23</center>||<center>6</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>6</center>
|-
|<center>locking ring</center>||<center>No.32</center>||<center>2</center>
|}

Step 1. Fix the two couplings on the Z motor shaft separately. 

Please note the opening of both end, one is 5mm, another is 8mm, connect the 5mm hole to the motor shaft. Screw it tightly.

Step 2. Thread the to L322mm smooth rods into the left and right end separately.

Note: please make sure the holes are alined, if not, you can loose the SCS8UU

Linear Bearing a bit, then you can thread smoothly.

Step 3. Thread the threaded rod into the Z nut, the video did not show this step here, but you need to do it now.

[[File:11 driving wheel 5.jpg|500px]]

Step 4. Assemble the finished part on the printer. Adjust the two end of the X axis to make sure the smooth rods and the threaded rod of Z axis is vertical, and the two end of the X axis are horizontal , which is very important, or it will hinder the move of the Z axis.

Step 5, upon adjusting, you can screw up the locking ring on the rods of  X axis.

Step 6. Thread the two locking rings to the smooth rod of the Z axis.

Step 7. Add the Z top mount to the Z axis. Screw it up with M3 x 16mm screw and 
M3 Square nut. 

Watch the video [https://www.youtube.com/watch?v=xKUJlnynt3c&index=20&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here].

==20. Connect the other end of the X axis belt.==

Now the X axis is ready, the distance between the two end is fixed now, we can fix the other end of the belt.
Step 1. Taut the belt tightly, determine a good place for the second hole of the belt. 

Step 2. Punch a M2.5 hole on one end of the belt（the hole can be as the diameter of the M2.5 screw , leave enough margin ）

Step 3. Fix the belt on one side of the belt -mount with a M3 x 8 screw and washer.

==21.Mount the building platform.==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Building platform</center>||<center>No.44</center>||<center>1</center>
|-
|<center>Heatbed set</center>||<center>No.53,54,55</center>||<center>1</center>
|-
|<center>wing nut</center>||<center>No.42</center>||<center>4</center>
|-
|<center>Hex  Counter-sunk-head screw</center>||<center>No.19</center>||<center>4</center>
|-
|<center>Spring</center>||<center>No.33</center>||<center>4</center>
|}

Step 1.Stack the heatbed and the alunimun plate together.

Step 2.connect the heatbed and the alunimun plate to the acrylic plate(A15) with 4 Hex Counter-sunk-head screw with the spring in between.

Step 3. Lock the screw with a wing nut.

For detailed video tutorial, please watch [https://www.youtube.com/watch?v=Gko_pErdDbc&index=21&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here]. 

==23.Mount the LCD panel==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>LCD 2004</center>||<center>No.64</center>||<center>1</center>
|-
|<center>Knob</center>||<center>No.65</center>||<center>1</center>
|-
|<center>Spacer</center>||<center>No.50</center>||<center>4</center>
|-
|<center>M3 x 12mm screw</center>||<center>No.22</center>||<center>4</center>
|}

Step 1. Insert the spacer into the 4 holes on the LCD panel from front to back.

Step 2. Mount the LCD on the main frame (A1) with 4 M3 x 12mm screws.

Step 3. Screw up the knob.( The screw is inside) 

Pay attention to the two connectors at the back of the LCD. 

EXP 1 is for the SD card reader. EXP 2 is for the displaying of the LCD.

Do not mix them up. 

[[File:12 LCD1.jpg|500px]]

[https://www.youtube.com/watch?v=7no4ov4Idgs&index=22&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 Here] you can watch the video.

==24.Mount the power supply unit(PSU ) and the socket.==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Power supply  Unit </center>||<center>No.58</center>||<center>1</center>
|-
|<center>3D Power Cable</center>||<center>No.60</center>||<center>1</center>
|-
|<center>M3 x 12mm screw</center>||<center>No.22</center>||<center>4</center>
|-
|<center>Hex  Counter-sunk-head screw</center>||<center>No.18</center>||<center>2</center>
|-
|<center>M3 hex nut</center>||<center>No. 2</center>||<center>2</center>
|}

Step 1, take off the wires connected to the socket, before you do, please take a photo of the wire connection, in case you connect them wrongly later.

[[File:12 LCD2.jpg|500px]]

Step 2. Mount the socket on the bottom of the right side panel( A2) with 2 M3 x 16 Hex Counter- sunk-head screws and M3 hex nut.

Step 3. Thread the wires conencted to the switch through another hole on the bottom of the right side panel( A2) from outside to inside and connect the 3 wires to the socket, do not mix them up.

Step 3. Moun the PSU on the right side panel with 4 M3 x 12mm screws

Take a look at the video [https://www.youtube.com/watch?v=MHKriFV8EJs&index=23&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7 here]. 

==25.Mount the control board.==

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>Control board kit</center>||<center>No.62</center>||<center>1</center>
|-
|<center>Sticker</center>||<center>No.47</center>||<center>1</center>
|-
|<center>Heat sink</center>||<center>No.48</center>||<center>1</center>
|-
|<center>Spacer</center>||<center>No.50</center>||<center>4</center>
|-
|<center>M3 x 12mm screw</center>||<center>No.22</center>||<center>4</center>
|}

Step 1. Cut the sticker into small pieces.

Step2. Past the heat sink onto the chip of the A4988 drivers. The sticker is double sided adhesive.

Step 3. Insert the spacer into the 4 holes of the board from back to front.

Step 4. Moun the board on the left side panel with 4 M3 x 12mm screws.

[https://www.youtube.com/watch?v=PNC0mOwxbhU&list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7&index=24 Here] is the video.

==26.Wiring==

GT2560
Before you start wiring, please take a look at the wiring schematics.

[[File:13 Wiring1.jpg|700px]]

You can see original picture [http://www.geeetech.com/wiki/index.php/GT2560 here].

For your convenience, the first two steps have been finished by us before shipping. you can skip them.

Step1. Check the ubdivision of stepper motor 
The subdivision of stepper motor can be setup by jumper cap, plug all the jumper caps (For A4988)

[[File:12 Wiring2.jpg|500px]]

If you are using DRV8825 instead of A4988, the jumper caps should be changed as follow:

[[File:13 Wiring3.jpg|500px]]

Step2. Plug stepper motor driver
Plug the 5 A4988 into the stepper motor driver slot. Mind the directions of A4988. 

[[File:13 Wiring4.jpg|500px]]

If you are using DRV8825 instead of A4988, The correct connections are as follow:

[[File:13 Wiring5.jpg|500px]]

Step3. Connect wires for motors.

1) Connect wires for X-axis motor.

[[File:15 x motor1.jpg|500px]]

2) Connect wires for Y-axis motor.

[[File:15 y motor1.jpg|500px]]

3)Connect wires for the 2 Z-axis motors. 

[[File:15 z motor1.jpg|500px]]

4) Connect Extruder motors

Connect extruder 1.

[[File:18extruder 1.jpg|500px]]

Step4. Connect heating wires.

Loosed the screws in the green terminal and put the red wires into the slot and screw it up. 

* There is no “+” and “-“ polarityfor heating wires

[[File:Wiring6.jpg|500px]]

[[File:Wiring7.jpg|500px]]

1） Connect heating wires for heatbed.

[[File:21 heatbed1.jpg|500px]]

2） Connect heating wires for extruder 1.

[[File:22 extruder 1.jpg|500px]]

Step5. Connect wires for thermistor.

1) Connect wires for thermistor of heatbed.

[[File:24.thermistor of heatbed.jpg|500px]]

2) Connect wires for thermistor of extruder 1.

[[File:25 thermistor of extruder2.jpg|500px]]

Step6. Connect wires for endstop.    * There is no “+” and “-“ polarity for endstop
1) Connect wires for endstop of X-axis at X-Min.

[[File:26 x endstop.jpg|500px]]

2) Connect wires for endstop of Y-axis at Y-Min.

[[File:27 y endstop.jpg|500px]]

3) Connect wires for endstop of Z-axis at Z-Min.

[[File:28.z endstop.jpg|500px]]

Step7. Connect wires for Fan.

Note the “+” and “-“ polarity for fan
Red:  +
Black: -

1) Connect fan for control board at FAN3.


[[File:29.board fun.jpg|500px]]

2) Connect fan for extruder at FAN1.

[[File:30 extruder fun.jpg|500px]]

If you use the 2-pin extension wire for the fan,  just plug them on the + and - pin.

[[File:31 fun.jpg|500px]]

Step8. Connect wires for LCD panel.

There are two cables, one is for LCD encoder, the other is for SD card, 

EXP1 to SD card

EXP2 to LCD

[[File:12 LCD1.jpg|500px]]

[[File:32 lcd 2.jpg|500px]]

Step9. Connect wires for power input.

[[File:33 power input.jpg|500px]]

Step 10. Connect the wires to the PSU.

[[File:34 PSU.jpg|500px]]

Note the correspondence between the color of wires and the connector. 

Brown------L

Blue  ------N

Yellow------GND

Red ------ -- + V

Black------COM

That is all for the wiring of GT2560.

27.Mount the filament spool.

{|class="wikitable"
|-
!Required parts!!Part ID!!Required number
|-
|<center>M3 x 16mm screw</center>||<center>No.23</center>||<center>6</center>
|-
|<center>M3 Square nut</center>||<center>No.16</center>||<center>6</center>
|-
|<center>M3 washer</center>||<center>No.7</center>||<center>6</center>
|-
|<center>Spool base plate</center>||<center></center>||<center>1</center>
|-
|<center>Spool side pane</center>||<center></center>||<center>2</center>
|-
|<center>PVC tube</center>||<center></center>||<center>1</center>
|-
|<center>PVC tube</center>||<center></center>||<center>2</center>
|}

[[File:Prusal I3 manual pic78.jpg|500px]]

So far, the whole printer is built up, you can tidy up the wires with the zip ties and the coil wire. 


Before even attempting the first print it is vital that the printer is correctly calibrated. Skipping or rushing this step will result in frustration and failed prints later, so it is important to take the time to make sure the machine is correctly set up.

Each machine may have its own calibration procedure and this manual will not attempt to cover all the variations. Instead here is a list of key points that should be addressed.

Frame is stable and correctly aligned.

Belts are taut.

Bed is level in relation to the path of the extruder.

Filament rolls freely from the spool, without causing too much tension on the extruder.

Current for stepper motors is set to the correct level.

Firmware settings are correct including: axis movement speeds and acceleration; temperature control; end-stops; motor directions.

Extruder is calibrated in the firmware with the correct steps per mm of filament.

The point regarding the extruder step rate is vital. Slic3r expects that the machine will accurately produce a set amount of filament when told to do so. Too much will result in blobs and other imperfections in the print. Too little will result in gaps and poor inter-layer adhesion. For how to set up the printer, please visit:https://www.youtube.com/playlist?list=PLODCkot3GriiNbAxIwO9JCZjQSb92CWN7