A more printer friendly of the previous version. MODS: Reduced materials Faster Print Better Engineered Higher guide hols for tightening on the top. I found that on the first flex shaft jig my pla was bending at the corners, so, I decided to cut some fat and make a more printer friendly piece that used less plastic. Also, I have a economy printer, so I'm sure this problem can be avoided with some models. Feel free to add comments and ask questions!