Not pedal, or even music related, but I think it will still be of general interest. I gave my business away to my employees at the end of 2020, but I still have shop use, and go in both to help with issues (usually dealing with one of our benevolent California bureaucracies..., or a tricky estimate). Or, if a project involves odd lighting or pretty much any working electronics—no one else seemed interested, and they were always the projects that I wanted to do myself anyway.
I just finished this a few days ago. Can't say what it is (basically a small ( 5.5 inches tall) desktop telecommunications device), but can show an image or two. The chassis holds provided, working circuit boards, except for the small board to take the 5 v input and up it to 12 v for the LEDs. The housing was several 3D prints, both filament and resin. (I had a hand in the CAD, but someone else did the finish work—I not working anymore, right?) The aluminum chassis was waterjet cut (something we send out; our lasers do not like aluminum) and then a few simple folds.
The trick was how to make the lighting happen. When off, you can just barely see the white logo, on a black mirror face. When the device is powered on, the LEDs (white, which ring the perimeter of the front plate, which is 1/8th acrylic, with a partially mirrored back surface) come on and ooh-la-la. Then, about 5/16 inch behind that front plate, is a second sheet, 1/6th thick, that is fully mirrored, with a clear red tint applied to the front. The thin white line is laser cut into the back of the front plate. This was the main stickler; getting it as visible as possible when lit, and as invisible as possible when off. The infinity part took several adjustments to get right, but that darn white line took about a dozen trials of different depth and width cuts. The industrial designer had no idea how any of this would happen, but was also open to understanding what was involved, and what slight changes his design needed to make it happen. (ID designer without ego issues = rare!)