Now that I have a 5126 Portable, I am finding my trackball to sometimes work and other times not, the culprit being those nasty Rubber Rollers.
Using my Mitsutoyo Digital Calipers, I measured the following:
1. Metal Shaft Diameter: 1.0mm
2. Rubber Roller Thickness: 3mm
3. Rubber Roller Diameter: 4mm
Since the Shaft Diameter is 1.0mm, I would assume the diameter of the Hole in the center of the Rubber Rollers should be slightly less than that, say 0.8mm or so.
I wouldn't think that anything 3D printed would be good enough. The material should be Rubber or Silicone for the best grip.
Using my Mitsutoyo Digital Calipers, I measured the following:
1. Metal Shaft Diameter: 1.0mm
2. Rubber Roller Thickness: 3mm
3. Rubber Roller Diameter: 4mm
Since the Shaft Diameter is 1.0mm, I would assume the diameter of the Hole in the center of the Rubber Rollers should be slightly less than that, say 0.8mm or so.
I wouldn't think that anything 3D printed would be good enough. The material should be Rubber or Silicone for the best grip.