Desk Magnifier Mod

I've had the desktop magnifier with an ancient glass tube of light that gets hot for decades and wanted to replace it for years, but never found what I wanted and it would never die. I saw another mod here a few weeks ago (https://www.thingiverse.com/thing:2757462
) and got inspired. It had a different mount and lens size though. This has a 5 inch lens that measures 126.3mm with a 4mm edge, and the mount is on top instead of the back. So I found a COB LED ring on ebay for $12.41 that's 140mm and assumed it would clear the lens or even hold it in place. It does clear it, but it's 5mm wide, so the I.D. is 130mm.

The top part was printed using a brim and supports (touching build plate) .

The screw holes are 2mm wide and 6mm deep for plastic screws. 8 for the ring, and 4 for the back. The ring is 2.5mm thick and the back is 4mm. So 8 2x8 and 4 2x10 at most. 2-3mm shorter would do fine.

The switch is a common mini rocker (20x12mm), and you'll need a 12V DC wall wart, and either a female