There are a lot of CNC machines sitting around in basements and ... you can make an acrylic lens on a cheap hobby CNC machine. The trick is just a very small stepover on your CNC path.

As with most of these cheap CNC machines, one could argue that it’s more of an engraver than a full mill. But on the plus side, you can mount other tools and spindles to get different results.

An inside look into the Carmelite Monks of Wyoming, who are combining centuries-old Gothic architectural principles with modern CNC machining to build a monastery in the mountains of Wyoming.