Why wouldn't something like the Surly fixie breezer DO work? That is them in the middle:
You would need to face them with the opening straight down.
A typical pair of drops could be 7MM where the wheel bolts on and 4mm where it brazes in. Some 5/16" cold rolled stock would work for making your own, reduced as required for the thinner bits.
When you look at a drop it looks very similar to a wrench. You could probably find an old wrench that fits straight on the end, not canted, and either grind off the chrome, or luckier still, find one without finish. It's not safe to braze chromed material.
Last edited by NoReg; 02-21-08 at 03:59 PM.