Before I show my pics, let me just say that everyone else's looks much better than mine, and the only tools I used were a cordless drill, a dremel (only the disk for cutting for a few minutes), and nearly an entire tube of 5 minute epoxy:
Cost me about $25 total, $13 for the bar (should have bought 1/8" instead of 1/4")
As for performance, it cooled an old 1600+ Palonimo around 35-40*C depending on the ambient :shrug: