The 225 flex shaft is the only attachment that came with my Dremel 4000 kit. My father-in-law and I gave it a quick try when we were testing all the pieces that came with the tool, but then I put it away. Recently, after ongoing difficulties with making long cuts, I decided to give it a more thorough test.
Dremel says that it’s very important to suspend the rotary tool above the working end of the flex shaft. While they have apparently retired the 2222 flex shaft tool stand, at least in North America, they will happily sell you the 220-01 workstation that can do the same thing and more. An alternative solution is also available from a third party. The flex shaft is essentially a hollow tube with a square wire rotating inside of it. Failure to elevate the tool above the flex shaft can cause the internal wire to disengage from the working end, possibly causing damage. I also didn’t want the 4000 to rest on a table top while it was running, so I looked for a way to hang it. Continue reading