Open Hardware
Assembly Instructions

Gather parts

• 1x- Z Lower Left mount (AS-PR0045)

• 1x- Z Upper Left (AS-PR0044)

• 1x- X End Motor assembly (AS-PR0046)

• 2x- NEMA 17 Stepper Motor (EL-MT0029)

• 1x-Helical flexible shaft coupling (HD-MS0351)

• 1x-Timing pulley (HD-MS0033)

• 1x-Nema 17 stepper motor damper (EL-MT0032)

• 4x- M3x12 SHCS (HD-BT0039)

• 2x- M3x10 SHCS (HD-BT0005)

• 2x- M3x5 SHCS (HD-BT0044)

• 1x- Smooth Rod (HD-RD0035)

• 1x- Drive Rod (HD-RD0037)

• 1x- Z Drive Nut (HD-NT0047)

• 2x- Momentary switch (EL-SW0022)

• 1x- 627 bearing (HD-MS0277)

• 1x- X/Extruder Cable harness(EL-HR0108)

• 3x- M5 x 10mm Socket Head Cap Screw (HD-BT0048)

• 4x- M3 x 6mm Flat Head Socket Cap (HD-BT0128)

• 3x- M3 Set Screw (HD-BT0012)

• 4x- M2 x 10mm Socket Head Cap Screw (HD-BT0107)

• 3x- M5 Washer (HD-WA0040)

• 6x- M3 Washer (HD-WA0038)

• 4x- M2 Washer (HD-WA0012)

• 5x- 8” cable tie (HD-MS0058)

Tools Required

• Flush wire cutter

• 1.5 mm hex driver

• 2.0 mm hex driver

• 2.5 mm hex driver

• 4 mm hex driver

• 2in*lbs torque driver

• 5in*lbs torque driver

Set the 20 position connector at the Extruder end of the cable harness to 80 mm from the back of the connector the end of the cable chain, using the printed jig. Secure the cable in place with a cable tie

Connect Brown & Green wires to a end stop switch , connect Yellow & White wires to a end stop switch (see images, position relative to the actuator bottom on the switches is critical)

Connect the 30mm cable chain mount to the X carriage motor part (Motor mount side), use 2x M3x 6 FHCS black oxide screw, tighten to 5 in*lbs

Connect another 30mm cable chain mount to the X carriage motor part (Drylin bearing side), use 2x M3x 6 FHCS black oxide screw, tighten to 5 in*lbs

Connect the open end of the chain (opposite end of the chain where we secured the wires to the chain) to the cable chain mount near the motor mount

Route the three wires around the X carriage motor part, connect the second segment of the cable chain to the cable chain mount attached to the other end of the X carriage assembly

Align and install the end stop switch (Brown & Green wires) with the switch mount located in the middle of the X carriage Motor part, Secure the switch with 2x- M2 x 10 SHCS and M2 SS washers, tighten screws to 3 in*lbs

Snap the molex connector into the jig as shown. Wrap the wire around the far post on the jig and run the wire back to the post closest the molex housing. Wrap the wire around the post closest to the molex housing and run the wire back to the far post. Cable tie the center of the wrapped wires, designated by the half circle in the jig

Align and install the end stop switch (Yellow & White wires) with the switch mount located above the motor mount of the X carriage Motor part, Secure the switch with 2x- M2 x 10 SHCS and M2 SS washers, tighten screws to 3 in*lbs

Align the wires (previously wrapped around the X carriage) with the scalloped features of the X carriage Motor

With a cable tie secure (the cable tie latch must be on the opposite side of the X carriage Motor than the wires) the three lower wires and one upper wire to the lower cable mount area of the X carriage motor

With a cable tie secure (the cable tie latch must be on the opposite side of the X carriage Motor than the wires) the remaining upper wire to the upper cable mount area of the X carriage motor

With a cable tie secure (the cable tie latch must be on the opposite side of the X carriage Motor than the wires) the five wires to the cable mount area nearest the Motor mount if the X carriage motor.

With a cable tie secure the Zmax endstop wires along the edge of the x end motor as pictured. Be sure the zip tie is under the quick connect terminals on the endstop side.

All cables must be tightly secured and as close to the X carriage Motor as possible to prevent the cables from rubbing on the frame.

Note: The X motor cable's heatshrink should be aligned with the back of the X end motor as pictured.

Cut off any remaining cable tie length past the cable tie latches.

Install a drive rod into the Z lower 627 bearing ensuring the drive rod extension enters the flexible shaft coupler, the drive rod shoulder must sit flat against the 627 bearing face, align the flat face of the drive rod shoulder with one of the set screws in the coupler, tighten both set screws to 5 in*lbs

Install a Smooth Rod into the Z lower for approximately 30mm of the rod to extend downward in the direction of the motor

Install the X Carriage Motor assembly (with cables, switches, and motor attached) onto the Z Lower Left, Drive Rod, and Smooth rod assembly, position the X carriage Motor assembly just above the Z lower left

Screw the Z nut onto the Drive rod, position the rod approximately 200mm from the top of the drive

Attach the Z nut to the X Carriage assembly using 3x- M5x 10 SHCS Black Oxide and 3x M5 washer black oxide, loosely secure each screw then tighten to 8 in*lbs