I was working on fine-tuning my acrylic-cutting chops to help a neighbor make an instrument panel for his truck, which he’s always working on as “truck therapy”—so I made this widget as an experiment, just using a .063" flat for roughing and .063" ball-mill for finishing. The geometry is derived from the golden-ratio:
And then here’s the truck-panel installed:
It’s 0.1" thick tinted acrylic that’s been painted on the backside and then milled through with shallow cuts to create the lettering/numbering and such. It was a fun little side project to knock out.