This gear shirt was a Christmas present for my little bro, an aspiring mechanical engineer who's about to graduate from college. I don't know if he knows anything about steampunk (the usual application of this design, I'd say), but he tinkers with enough stuff that it seemed to be his thing. For real. He had Mom's snowblower all ripped to pieces, trying to fix it. I changed the colors to cool bluish-grays and a bit of taupe.
Close-up of the embroidery:
Also did a tee with a volt meter for Dad (way too square for the likes of Craftster). Did he NEED a volt meter shirt? I dunno. But when you find a design that randomly appropriate, sometimes you just gotta stitch it. Plus it's the whole "my daughter did this" thing. That's the theory I'm going with anyway.