>>1834497>recommendations for shorter stemsShorter than? 100mm? Do you happen to know the rise & steerer diameter? I bet you'd get more suggestions if you post the specs.
I imagine you won't find one with the branding. I've had friends in a screenprint shop do curved objects before, but they tell me it's tricky. I'd suggest looking for Felt decals/transfers, or a paint shop (auto, motorcycle, etc) with the right kind of printer. It's definitely an autistic rabbit hole, but perhaps check out model making forums (trains, planes, etc). I've read about guys making diy transfers because the ones on ebay, etc didn't match EXACTLY.
>>1838815I know you said you don't have a better place to mount your vise... Try driving your car (or similar) over one end of the board, then put the frame in the vise to reef on it.
But at this point I would remove your diy tool, take your hacksaw apart and install the blade thru the bottom bracket to cut a slot in the inner diameter of the problem cup. Say the wrench flats are at 3 oclock and 9, make the cut at 6 or 12. Almost all the way thru the cup (if you go all the way, you'll hit the frame threads). This might give you enough relief to unthread the thing, or you could use your vise on the wrench flats to crush the cup to a smaller diameter.
I like that you post pics. In some ways it keeps this place alive.
>>1838817>bent the seal thing prying it free Pretty common if it's metal instead of plastic. (You can bend the plastic ones too...) What I've done to straigten metal dust caps is use a vise (later an arbor press) to press sockets into it. Have a wood, plywood, etc backer board, and get the right size socket (measure w/ calipers). If you think of the cross section of that dust seal, it's kind of a U. One socket to press against the bottom of the U, one to travel through the center hole, to form it into a circle again. The OD is not as important, and unlikely to be bent.