Newly redesigned (10mm OD) to allow for a more sturdy stance
This is a spacer which has a 5mm off center hole drilled through it. It is used to tighten the V wheels ( and hence any carriage plate) against the MakerSlide rails.
This is mounted in a 7.14mm hole on a plate. When you rotate it, it will move a V wheel mounted with it and allow you to adjust the tension of the V wheel against the rail.
Adjustments are made with a 11-12mm wrench
This is a open source design by Bart Dring.