02. XY Drive Assembly

Fetch these six parts: XY motor cage left, XY motor cage right, XY motor cage bottom left, XY motor cage bottom right, motor support left, motor support right.

Look for letters indicating which parts belong to which side:

The letter L for left (when facing the front of the printer)

The letter R for right (when facing the front of the printer)

The sides do not differ much, but the parts are NOT mirrored.

Thread the two Cap Head Screw M5x40 and two Cap Head Screw M6x12 screws through the motor_support_l part

The motor_support_l part is supposed to hold the screw heads tightly

Thread the support assembly through the motor_plate along with the remaining two Cap Head Screw M6x12 screws

Attach the 3030 M6 T-nuts. Don't tighten fully yet.

Repeat the previous step for the right side with the use of motor_support_r part

Attach the left drive base to the left top back corner of the printer

Make sure the plate is in the corner and tighten the M6 screws to lock the T-Nuts in place

The T-Nuts need to rotate within the 3030 extrusion for a secure attachment

Repeat the previous step on the top back right side.

Fetch the three Countersink Screw M6x14 (the countersunk ones) and thread those through the xy_motor_cage_top_left printed part

Attach the 3030 M6 T-nuts, don't tighten fully

Pull the M5 Hex Locking Nuts into place with the nut pull technique (described in the Preparations guide)

Repeat on the xy_motor_cage_top_right part

Slide the xy_motor_cage_bottom_left part onto the M5 screws

Add one precision shim on the M5 screw going through the printed part and shim, idler, shim on the second M5 screw

Put the belt in, flat side on the idler, leave the ends of the belt hanging loose

Side one smooth idler on each of the two M5 screws, add shims on top of them

Fold the top belt over the idlers, smooth side on the idler

Leave a large loose loop on the top belt - you will need to thread the motor pulley through it later on

Place the top part on the assembly and fasten it with the M5 screws from underneath. The parts need to be flush but not so tight that they'll stop the idlers from rotating

Do not over tighten or you will be compressing the bearings.

Fasten the Countersink Screws at the top - remember that the T-Nuts inside need to rotate and grab the inside of the 3030 extrusion

Put the motor pulley on the motor shaft with the teeth oriented up

Attach the motor to the assembly with four Cap Head Screws M3x35. The motor pulley needs to get into the belt loop you left loose on the previous step

Make sure the motor is sitting flush against the plate

This is one of the most important steps in the whole manual - failure to align the belts will result in rubbing and belt failure!

Tighten the belt to remove the loose belt loop we left in the previous steps. Align the pulley to see both pulley grub screws through the openings in the printed parts

Make sure the belt is in the middle of the pulley

Tighten the grub screws on the pulley. One of the set screws should be in contact with the flat side of the motor shaft

The right motor drive is very similar to the left one with the difference that the bottom belt is driven so there are two idlers at the bottom and one on top

Attach the motor plate with the motor_support_r part and corresponding screws and nuts

Place the xy_cage_bottom printed part on the motor plate and thread the five shims with 3 smooth idlers on the M5 screws

Attach the top part

Do not over tighten or you will be compressing the bearings.

Unlike the in the left drive the pulley on the right drive has it's teeth downwards

As with the left motor this is a crucial step!

Ensure the belt pulley is aligned properly with the belt once you pull the belt loop back

Tighten the pulley motor screws