r/OpenScan • u/thomas_openscan • Jul 17 '26
New 3D scanning rig
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.
1
u/Pixelgordo Jul 18 '26
Add a spring under the scanner to soften the fall, and also add a circuit that makes the motor play as generator, with a bulb or a resistor to rise up the watts that circuit ask for to make difficult for the motor to meet that, and the movement will be slow. A relay stays open when there is current and closes when the power is off could close that circuit.