Printed Parts[edit | edit source]
|Belt terminator (flagged)||1|
|Y-axis motor mount||1|
|12 tooth T5 pulley||1|
Vitamins[edit | edit source]
|970 mm T5 belt||1|
|Large zip-tie (for belt tensioner)||1|
|Small zip-tie (for Y-axis motor)||3|
|M3×10 mm cap screw (Motor fasteners)||3|
|M3 nut (pulley)||2|
|M3×8 mm set screw||2|
|M2×10 mm screw||2 (used as a tool to thread holes)|
Prepared parts[edit | edit source]
Assembly - Summary[edit | edit source]
- Assemble motor block
- Attach motor block
- Attach belt
- Attach carriage
Assembly - Step-by-Step[edit | edit source]
- With a 5mm drill bit, ream the shaft hole in the pulley. If necessary, open the set screw nut traps in the pulley with a sharp knife.
- Screw 2 mm screws into the small holes of the motor mount, so that there is a thread in the plastic. If it's hard to start the screw, you can chamfer the top of the hole with the tip of a 3 mm drill.
- Remove the 2 mm screws out and set aside.
- Move the carriage back and forth to find the optimal position for the clamps. Then tighten the nuts on them.
- Attach the belt, making sure that it runs around the 2 sets of bearings and the pulley on the motor. The terminator with the flagged end will be closest to the motor. Use a large zip tie to hook the ends of the belt together. When cutting the zip tie off, leave enough so that you can grab it and tighten it some time in the future, as needed.
- Make sure the carriage can move so the bearing saddles can touch the frame clamps. You may need to file the top off the clamps to make this possible.
- Starting at the motor end, move the motor and idler so that the belt is aligned with the belt dog under the carriage. Move the y-carriage back and forth several times to ensure that the belt remains relatively centered on the idler bearings. Tighten the nuts for the motor and the idler.
- Move the flagged belt terminator on the y-drive belt as close to the y-axis motor as it can be and then move the y-carriage all the way to the opposite end and engage the belt dog with the belt.
- Attach the y-axis limit switch to the y-motor mount using a pair of M2 x 10mm screws with washers. If the belt terminator runs into the bottom of the motor mount, move the bottom of the motor mount out of the way by loosening the nuts on either side of it, repositioning it out of the way and tightening the nuts.