U shaped shim

U shaped shim that is 60mm long and 40mm wide. The center slot is 15mm wide. The shims have 2 small pegs on the top and two shallow holes in the bottom so they grip a little bit to each other. Also on the two legs there is a small chamfer that should help when you want to put an extra one under the already existing stack.

Thicknesses vary by factor 1.5, so:

• 1mm
• 1.5mm
• 2.25mm
• 3.38mm
• 5mm
• 7.5mm
• 11.25mm

This is just an arbitrary factor I used that should give me a lot of possible combinations so that I can try to match the gap as close as possible.