printrbot GO – Trapezoidal Lead Screws

So I've been struggling with my Z axis to some extent since before I even got the GO up and running.  While putting the kit together I decided I wanted to switch to metric lead screws for the Z axis to save myself from having to do some math every time I wanted to print at a different layer height, then a short while later changed to larger diameter (but still metric) rods and now have gone and changed them yet again. For the 5/16" zinc plated all-thread lead screws (18 threads per inch) that Read more [...]