2. X & Y-Axes

X and Y-axes

1. Take out the two (2) Y-axis assemblies. The goal is to get the white anti-backlash nuts to the same position on each Y-axis. To adjust the anti-backlash nut: rotate the black clamping nuts at the front Y plates. Then slide the black linear guide blocks above the white anti-backlash nut.

   
   

2. Identify between the left and right assemblies. Orient them onto your 4’x4’x3/4” MDF sheet, on top of your table, so that:

   • Lead screws face outwards
   • Motors face the back of table

   
   

3. On one of the Y-axes, loosely secure two (2) M4-12mm screws into the bottom holes of the linear guide blocks.

   
   

4. Grab a friend, OR take out the Y gantry packing foam. If using the foam: cut a rectangle in the Y gantry packaging foam (outlined in red).

   
   

5. Have your friend or foam support the X-axis rail. Place the X-axis assembly onto the Y-axis gantry at the notches, anchoring onto the M4-12mm screws.

   
   

   
   

   
   

6. Finish securing the two (2) M4-12mm screws using an Allen key.

7. Secure the remaining M4-12mm screws onto the linear guide blocks in a diagonal pattern.
   Then, secure the two (2) M5-25mm screws to connect the anti-backlash nut with the Y gantry. Only tighten until you feel resistance – do not overtorque these.

   
   

8. Repeat securing the anti-backlash nut and linear guide blocks on the other side.

9. Remove the foam from under the X-axis assembly, if you used it.

X-axis Motor

1. Loosely insert the motor onto the X-axis coupler at the left side of the machine.

   
   

2. Place one (1) standoff between the motor and Y gantry, then insert one (1) M5-50mm screw through the motor and the standoff, loosely fastening into the gantry. Repeat this for the remaining three (3) holes. Then fully secure all M5-50mm screws until snug.

3. Finally, tightly secure the coupler setscrews.

   
   

4. Prepare one inductive sensor by threading a nut onto it approximately 45mm / 1.5 inches from the front, and add a lock washer from the front. Pass this inductive sensor through the hole on the left Y-axis gantry plate, and thread the bump stop over the end of the sensor until it bottoms out. Hand tighten until snug.

   
   

5. Secure the nut and lock washer against the gantry plate using the LongMill wrench.

   💡 Tip: If adjusting the motor, tighten the coupler first, then tighten down the motor standoffs.

Congrats on finishing up the first section of assembly! You are well on your way.