Introduction When you’re knee-deep in a CNC project, whether it’s milling a sleek aluminum part or turning a stubborn piece ...

That seems to be the thinking behind this scratch-built CNC mill, and it’s only just ... readily available steel tubing, of the kind used for support columns in commercial buildings.

[Cooperman] had been poking around the ‘net checking out DIY CNC machines for a while ... for Tweakie is a welded frame made from 25mm steel square tubing. A keen observer may point out ...