A firm steady grip, a flat surface and 220, 400, 600, 1500 grit papers are all you really need for a perfect lapping job... 2000 is just for a perfect mirror finish and gives no temp decreases whatsoever...
220, 400 and 600 can be found at just about ANY hardware store since they're intended for normal home renovation (used for wood)
1000, 1500, and 2000 are specially made for metal polishing (usually for car painting) so you'll need to hit up an auto parts or auto body shop for these grits
A good lapping "kit" (220, 400, 600, 1500 grits) usable for 15ish separate jobs probably shouldn't cost you more than $16ish..... As for the flat surface, you can use the glass covering off of any picture frame (so that part is free) - just be sure not to take it off the one protecting your parent's wedding picture
Getting out and buying these yourself is a lot better of a deal than those single use lapping kits found online that go for $15-20 Edited by killa_concept - 5/15/08 at 6:55pm