While working on machining couplers for the micro-mill project, I found the need to index grub screw holes so I designed up this quick change tool post holder for a small hand grinder! To my surprise this worked out rather well! So I will be working on a larger 555 motor version soon!
Scotch Brite Discs: http://diy3dtech.com/38mm-abrasive-scotch-brite-wheels-for-dremel/
High Speed Spindle: http://diy3dtech.com/high-speed-spindle/
Quick Change Tool Post: http://diy3dtech.com/QuickChangeToolPost
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