The Who Dunnit #pinball machine slot machine reel project appears to be a success. This part seems to be difficult to find around here and even when repros are available in the US, these cost over $100 to import here, which I find a bit steep for a plastic piece this simple, so I made my own.
I'll release a video soon about the whole project and how the finished product looks installed in the game.
The model is now available here for #3dprinting:
ThingiverseWho Dunnit slot machine reel (03-9410 compatible) by apzpinsWho Dunnit pinball machine's slot reel. This is exact fit for the original with completely original support and mounting part.Two versions are included, single piece and two piece.Single piece is intended to be printed with the hub part of the reel pointing downwards and support around it. This is the recommended version.Two piece version does not need support at all, but you have to glue the center to the reel. Super glue seems to work fine, use enough so it won't break apart. This version differs from the single piece only in one place, the spot where the hub is inserted to the reel body. The hole in the center is 0.4mm larger than the hub piece to make it easier to assemble. Naturally this has to be printed out of transparent filament. Formfutura's HDglass clear PETG worked the best for me, I'm curious to see what other filaments work. It does not need to be glass-like, but parts of the decal are transparent and the lamp is expected to shine through them. 0.4mm nozzle seems optimal for the transparent material. Make sure the slicer considers the outer ring a single nozzle width area.This needs a metal threaded insert in the hub, the hole is for 4mm insert and it can be up to 10mm tall, so you can use almost any type of insert.The decal can be peeled off the original usually intact with enough glue residue to keep it on the print. I'd recommend a small piece of transparent tape at the end.Then mounting this, be sure to spin it by hand once to see it runs freely and does not touch the opto switch, adjust the position on the stepper motor axle as needed.There's no need to worry about the temperatures inside the game, the lamp inside the reel is rarely on and is far enough not to heat the plastic.
Greg Cocks 
