spacer.scad (365 Bytes)
Spacer to keep the belt ends stable on the same Z plane. Helps with accuracy and calibration.
Create a STL with OpenSCAD, modify as needed. I have the smooth side of washers facing the faces of the belt ends. The spring is very lightly compressed.
Springs
Spring specs: 1/2 Inch outer diameter x 1-1/2 Inch length, 1mm wire diameter
You can modify the scad to fit other springs, its parameterized.
Fitness went from .35 to .71 without other changes.