Tap holder

Please see my reason for making this thing here: http://www.thingiverse.com/thing:16662

I need the tap holder for rethreading holes after powder painting. That is why i made the handle thicker. For a drill holder it might be better with a thinner handle. Let me know if you want me to make one :)
The insert is drawn with a Ø6,1 hole.
I will also change that for you if needed.

INFO: I have measured some other taps at work today. They do not match the size of the cheap ones I use at home.