Source for replacement parts?

I'm looking for a part for a Mac Studio display (and yes, I know this doesn't qualify as "classic" but I'm trying to find a good overall solution for this type of repair). The part that failed is a simple piece of metal in a hinge which seems fairly well designed for replacement. However, I've been unable to find any sources for the particular part, Apple, etc. don't seem to have anything available. I do see some sites that have the entire hinge assembly available in the $18-$20 range, but I've been able to pick up entire monitors of this type for $25, so this really doesn't seem to make sense to pay this much for just the hinge when I could get a full set of spares (or even yet ANOTHER working monitor with the same issue). I'm wondering how people solve "spare/parts" issues like this. I've posted something to http://www.shapeways.com/ to see if someone would model the existing part, which I could then get them to fabricate. Not sure if that's going to be cost effective either (unless I order some quantity and sell extras with a mark up...) Earl p.s. A big thanks for the advise on the lubrication for the floppy drives. I ordered some of the Drislide which works excellently. A simple cleaning job with straight isopropyl alcohol, a couple drops, and all three floppy drives are now working as good as new...