Mission Accomplished my little hardware hack is done.
Used the cap of a milk bottle as the form, made an 18mm hole in it to fit on my #Dremel. Filled it with polymorph and waited until it was cold.
It fits perfectly in my stands for normal drills now. Saved 45 Euro on buying a new stand from Dremel and less clothed in my little worlshop. The amount spendt on 1kg #polymorph already paid off and still have 920g left : )
Time to start using the tool for my other #DIY projects!