These shims where made with Tinkercad and can be edited online at https://www.tinkercad.com/things/5sgQIUWQM9C The idea behind this was to produce 3D printed percision shim for Mini V-Wheels (http://amzn.to/1OoR7po). The short set are ~2mm tall and are designed to be placed between the bolt or nut as a precision shim. Whereas the taller set are ~6.35mm or 0.25 inches and intended to act as an offset from a plate acting as sandwich between the plate and wheel to form a stanchion.
Also check out the "how to" video at https://youtu.be/L2RDBXO1Lkg as well as our YouTube Channel at http://youtube.DIY3DTech.com for more projects like this or visit us at httP//www.DIY3DTech.com for projects and build notes!
Also use the "slow" setting with 100% (or as close as you can get) with smallest layer highlight possible on your printer as these are precision prints.