Open Hardware
Assembly Instructions

Place the Z Axis left assembly into the frame assembly

Secure the Z Lower left of the Z Axis left assembly to the frame assembly with four M3 x 6 mm flat-head socket cap screws using a 2.0 mm hex driver, torque to 5 in*lbs

Secure the Z Upper Left of the Z Axis left assembly to the frame assembly with six M3 x 6 mm flat-head socket cap screws using a 2.0 mm hex driver, torque to 5 in*lbs

Run the five gray cables through the Upper Strain Relief

Attach the X/Extruder Cable harness to the Upper Strain Relief with two M3 x 6 flat-head socket cap screw using a 2.0 mm hex driver, torque to 5 in*lbs

Flip the frame assembly upside down

Completely remove one of the Z right motor housing screws using a Phillips screwdriver

Insert the right motor's housing screw through the ring terminal of the Z motor right motor cable, reinstall the housing screw into the Z right motor capturing the ring terminal

Completely remove the one Z left motor housing screws

Insert the left motor's housing screw through the ring terminal of the Z motor left motor cable, reinstall the housing screw into the Z left motor capturing the ring terminal

Flip the frame assembly right side up

Connect the Z left motor harnesses female connector to the Z left motor male connector, the connect the Z right motor harnesses female connector to the Z right motor male connector

From the Extruder cable/ cable chain assembly remove the chain mount (last segment of the chain)

With 2x- M3x 6 FHSC attach the X carriage cable assembly chain mount to the Upper bearing holder. Tighten screws (~5in*lbs) See break out images of Chain Mount and Upper bearing holder, upper bearing holder comes already attached to the X carriage assembly

Slide the two smooth rods through the X End idler assembly and the X carriage assembly as pictured

Align ends of the smooth rods flush with the sides of the X End Motor, tighten down the four M3 set screws, torque to 2in*lbs

Check to see if the X carriage assembly runs freely

Attach the X/extruder harness to the X carriage assembly with two M3 x 6 flat-head socket cap Screw using a 2.0 mm hex diver, torque to 5 in*lbs

Attach the X timing belt to the belt mount on the X Carriage, tighten the M3 x 12 mm socket head cap screw with M3 washer using a 2.5 mm hex driver, torque to 3 in*lbs

Run the timing belt with the teeth on the inside around the timing pulley, then run the timing belt around the idler bearings and back to the belt mount. Feed the timing belt through the belt mount. Use the needle nose pliers to tension the belt, tighten the belt mount's M3 x12 socket head cap screw with a M3 washer using a 2.5 mm hex driver, torque to 3 in-lbs

Use the 508C Sonic Tension Meter to check the tension in the belt

The tension should be between 23-27 Newtons.

Trim the excess timing belt, leaving about 20mm on each side.

Attach the extruder to the X carriage using three M5 x 14 mm Socket Head Cap screws with black M5 washers with a 4mm hex diver Must use a straight 4mm driver and torque to 5 in*lbs, a ball end driver is not allowed

Plug the extruder cable 20 position male connector into the female connector on the X carriage so the alignment arrows on the connectors are pointing to each other

Place the extruder cable in the rectangular groove on top of the X carriage

Fasten the X-carriage cap to the top of the X Carriage using two M3 x 12 mm Socket Head Cap Screw with washer, ensuring wires are not being pinched by the X-Carriage cap; tighten the screws to no more than 5 in*lbs