Board Thread:Questions and answers/@comment-27158360-20160101174609/@comment-27306930-20160130043426

You need a specific collet for the cutting wheel shaft. Someone gave me an awesome Dremel tool a dozen years back that included 3 different collets to adapt to all sorts of Dremmel bits, and a flexible wand, plus a 100 bits. I've been in Dremmel heaven ever since.

Let me know if you're having a problem getting one, and maybe I can send you one.