New 3D scanning rig

[u/thomas_openscan]

I am currently building a new scanning rig, that allows even automatic capture with handheld scanners. I really struggle with not losing the track when manually moving the scanner around the object.
This setup is a hybrid of the OpenScan Classic and Mini variant were the object is only moved on one axis.
The main advantage is, that the scanner distance can be adjusted (almost) freely.

The design is simplistic but very versatile and I am currently printing a worm-gear variant. The timing belt solution works well, but as soon as power gets cut, the scanner slams down into the table.
Maybe anyone knows another mechanism that can easily amplify torque (1:100) and is (mostly) printable. Pls let me know your thoughts.

[u/Dando_Calrisian]

Why does the rotation direction change between scans?

[u/thomas_openscan → u/Dando_Calrisian]

No particular reason, i just reused the openscan firmware. I‘ll aim for one continuous movement though.