Stage 02: Z-Axis

Prepare four z-motor brackets as shown.

Z-Motor Bracker

F608ZZ Bearing

M4 x 6mm

Secure onto the four z-motors an oldham coupling.

Secure the coupling to the flat of the motor shaft

Z-motors are the smaller NEMA 17 motors

Secure to the motors 4x M3x55mm stand-offs.

Secure the four z-bracket assemblies to the frame with M5x8mm bolts and M5 T-nuts.

Ensure the motors connectors face the rear of the machine.

Fix the four z-motor assemblies to the brackets.

M3 x 12mm Bolt

Fix to the rails the Z-carriages with 4 M3x16mm bolts.

Front Z-Carriage (Smaller)

Rear Z-Carriage

Fix a lead screw nut to each z-carriage.

Lead Screw Nut

M5 x 18mm Bolt

Thread the four lead screws through the nuts and down into the couplings.

Secure the lead screws to the couplings.

Prepare the lead screw brackets as shown.

Note that the brackets are mirrored, you should have two types of each.

Lead Screw Bracket

F608ZZ Bearing

M4 x 6mm Bolt

M5 x 10mm Bolt

M5 T-Nut

Fix the four lead screw bracket assemblies to the frame.

Slide the bearing over the lead screw, leaving around 5mm protruding.

Install the print platform as shown. Ensure the cables come out of the left side of the platform.

M5 Shoulder Bolt

Shim

We’ve identified that the shim may have been left out of some kits. Please don’t worry — this part is not critical to operation and can be safely omitted. If you prefer, a standard M6 washer can be used as a substitute.

Bed Spring

Spacer

Insert into the four lead screw nuts the grub screw, turn until any play between the lead screw and nut has been removed.

Note, do not over tighten, the lead screw should still be able to rotate smoothly, over tightening can result in a z-motor stalling.

If you find that one of the lead screws does not rotate smoothly during inspection, please follow the steps below to correct the issue:

Carefully loosen (do not remove) the bearing brackets at the top and bottom of the lead screw.

Rotate the lead screw now - it should be smoother.

Re-tighten the brackets.

Secure the Z Cable Relief Bracket to the frame.

Z Cable Relief Bracket

M5 x 10mm Bolt

M5 T-nut

Secure the bracket just under the joint in the far left corner of the frame as shown.