Tube Straightener - 4mm Dia

Tube Straightener - 4mm Dia

I made it 4mm hoping will help me straighten PTFE tube, but it does not work.

I decided to post it as it can be used as a benchmark for remixes to larger diameters useful for straightening copper tubes.

Update 2023-0316 -  by request

Added 2.55mm options; fully 3D printed / 3D+bearings (MR148) for roller guiding. The bearing option will also need M4X0.7X05 screws to secure everything in place.