I had to cut down two Middle Atlantic CFR racks this morning.  These are the little base cabinet racks that are welded together.

They're also kind of fit together like a puzzle, so once I had the welds drilled and cut out to get the tops off I couldn't just cut the rails straight across to shorten them, had to cut halfway across and then vertically so they would fit back in the top.

Started to touch up the ends with a can of black spray paint and it got clogged.  Had to finish by pulling the nozzle off and then pressing the can against a little piece of cardboard that I used like a paint brush.

All this because I got the wrong dimensions (should have measured myself!).