Like just about everyone else out there, [Adam] thinks that CNC machines are pretty cool – so cool that he decided to build one of his own from scratch.
The CNC machine was constructed mostly out of MDF and scrap wood, with drawer slides used for smooth gantry movement. An off-brand rotary tool was used to do the actual cutting, and [Adam] picked up a few Sparkfun stepper motors to drive the machine.
The assembly was completed without too much trouble, but [Adam] says that programming the mill was a long and frustrating process. Cutting was rough and not very accurate at first, but little by little he got things working pretty well. As you can see in the video below, while the cuts look great, improvement came at the expense of speed. He says that the machine could use a redesign to speed it up, which he’ll get around to if some free time comes his way.
It’s not the absolute cheapest CNC build we’ve seen, it’s pretty darn close. With a few tweaks, it could definitely be a solid budget-friendly contender.