Mostly Printed CNC - Tool holder for Mastergrip Rotary Tool

**Update 7/19/2015**
**Rev8** fixes a clearance problem I did not see until putting this together. This version should work now.

I already have one of these Mastergrip tools I bought from Costco years ago which I believe is the same one listed below in this amazon link. This tool weighs 18.6oz. After installing this on the Z-axis pipes, it slides nicely between the bolts.
http://www.amazon.com/Mastergrip-190pc-Rotary-Tool-Accessory/dp/B005HKMASS

This upper & lower tool holder