Rack and Pinion Hand Cranked Drive

thingiverse

Rack and Pinion Hand Cranked Drive 180 degrees of rotation equals 1-3/4 inches of linear travel, making it ideal for precise movements. To achieve the desired amount of travel, simply elongate the rack. Its compact size is impressive at 1-5/8" x 3" long. Scaling up this design is definitely possible, but I haven't experimented with it yet. A slot on the end of the gear rack allows you to secure a M3 nut and attach whatever accessory you like. The prints are remarkably easy to create, requiring no supports whatsoever. All my parts assembled perfectly without any sanding required. To assemble the drive, place the rack and pinion in the left-hand housing, then snap on the right-hand housing. Next, insert the handle into the pinion and secure it with the swivel. For a permanent assembly, you can superglue the two housings together and attach the handle to the pinion, but mine stayed together without any glue. Video: https://youtu.be/0l3sgTrwmDc Print Settings: Printer: MP Select Mini Supports: No Notes: You'll need to rotate the STL files for proper printing orientation. The correct orientation should be self-explanatory.