2-axis, general motion platform. Made using the Fabricatable Axis, milled in POM.
Designed in Fusion360.
Good practice: If this is your first round of using Fab Machines, read up on the general wiki for best practices, tips & tricks and theory.
Inspired by Jake Read, this machine uses a variant of the Fabricatable Axis that uses flexures instead of eccentric screws for bearing tension. The bearings on the flexure side have a 0.2 offset. This turned out great, and gives a tight and easy-to-tune setup. The rack is kept as a separate component, instead of being milled directly into the rail. The rack is milled with slots for tuning (note: Im not sure if this is necessary, and tuning the rack is kind of a hassle. I want to come back to this on next iteration).
As always, good to surface the waste board to get straight good cuts. Hurtig v1 was milled on a luxurious Multicam 3000 @ Marineholmen Makerspace, in Bergen. This machines offers some luxurious options (vacuum table and tool changing), but all the parts in this case was milled out using a 3mm upcut from VHF (link).
Fab Axes and frame are assembled separately. The joints really helps on keeping things aligned. Make sure to remove any tabs from milling. See videos for quick previews.
Disassemble gantry and frame and pack into carry-on-sandwich
| Material | Where to buy | Price (nok) |
|---|---|---|
| HDPE 8mm | https://www.eplast.no | 1220,-/1m2 |
| NEMA24 Stepper | https://www.creative3d.no | 300,- -ish |
| Screws | https://www.clasohlson.com/no/Treskrue-med-panhode/p/40-9568-6 | 26,- /25 |
| Controller | take your pick. I used a Marlin board from https://ooznest.co.uk |
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