These are probably too delicate for long term use, and there are plenty of better, stronger ones already. While my first pair (pictured) have not yet broken, I have included a beefier pair without the holes going completely through the spokes. Personally I plan to upgrade to the ones without holes after these break but for now the ridiculousness of pointless bling is a reward in itself. The way the Z knob catches the light while printing makes my day.

Included is one pair for the extruder, one pair for the Z axis, and a horn cap. The extruder wheel will probably break first (as did several of its test prints as I extracted the supports) so you might want to ignore the version with the holes. If you have the means, it would probably cast well in silver. The horn cap fits on all of the models. Dingle-ball ribbon trim not included.

I preferred to print chain-up for no better reason than to have a smoother surface up top. It takes a little longer as that means more supports to pluck away, but your mileage may vary. I added a notch along the base of the extruder ones; my earlier test prints didn’t quite fit snugly, so that’s a pilot hole in case you need to tap in a small screw to hold against the flat side of the post.

Filament:
I did one test print using a shinier, silky filament, but that one had little strength. These final ones are made using black generic PLA. The ones that glow in the dark at solid and look sweet, but I’m very biased towards glow in the dark anything.

Chrome Surfacing:
I was grumbling out loud about how poor silver paint looks where chrome is called for, and my son suggested I try chrome nail polish. It's basically a very fine glitter that's intended to be dusted on and rubbed to smooth over a nearly-dry surface of base nail color. It took a little while to find some as it was apparently a thing a year ago, but I found Walmart has something under the "Sensational" brand. Later on Amazon I found the brand "CoulorButtons" that included the gold powder, and another that I think is supposed to be iridescent.

There are videos on how to apply this stuff on nails, but here's how I did it. I applied two layers of gloss black spray paint, one suitable for plastic. When the first layer was still drying, I applied the second layer just a little thicker than I normally would.

When the paint was nearly dry, I opened the glitter. Don't wear a good shirt. Apply the stuff liberally. Too much is better than not enough, and any unreachable crevasses will look fine. Once it looks like a glitter mess, brush off excess with a dry brush. Rub it gently with the applicator thingy that comes with the glitter. The larger flakes will brush off but the fine dust will remain, and that can be smoothed out to make a shine. If I had it to do again I'd add an extra layer of paint or two; I had hoped the paint would also fill the banding of the print layers but I was worried I'd gum up the detail. On the underside (where the supports had attached) it never smoothed out so it looks glittery, but where I had finished the surface it really worked well.

Note that many reviews of this nail polish say it doesn't apply well and doesn't achieve the finish, so there may be some luck involved. If it looks bad, just keep practicing. I can't say it's indistinguishable from chrome, but it does look more like "chromed" model parts than any paint I've tried. It really does look better in person than the pictures show (most friends think it's metal) and I plan to use it again on the next ridiculous printer bling I plan to share. ;-)

Feel free to ask if you have any questions, and I'll try to update this. And of course, feel free to modify these to your own nefarious ends. I just ask that, if you enjoy these or find a better use somewhere, please let me know!