The result is remarkable: with a lot — and we mean a lot — of sanding and polishing, you can make an acrylic lens on a cheap hobby CNC machine. The trick is just a very small stepover on your ...

Looking to add a small CNC machine to your garage or hackerspace’s arsenal of tools? Like any tools — China has you covered for the cheap options — but the question is, is it worth it?

I've always had the vague feeling that CNC is just a little too fragile to be reliable on typical spindly consumer-grade machines, but nothing about the Carvera Air feels consumer-grade ...