Here’s a great CNC hack that adds a ton of functionality, a DIY rotary 4th axis! [Jim] had started this project over a year ago when he originally ordered the gearhead off eBay, but like many ...

It’s the Rotomill, a simple three-axis CNC machine, with a rotary axis, that just about anyone can build. The design of the Rotomill uses a standard, off-the-shelf Makita rotary tool for the ...