Heh. I hear ya. But it's the time involved, (we old guys think of this more and more ... for something I might use once. But that's usually a no-good excuse.
That said, I did find a nice piece of brass "tubing" down in the shop that ought to work well for custom cup presses.
1 1/8 inch bore. 1/2 inch wall thickness. Guess I'll probably get the chips flying, but I won't make the whole tool.
Found that huge, threaded bolt/rod in the garage too.