And a tip on drilling - you can break the leading edges on the bit to prevent them from digging in and grabbing. See
http://www.hawkfish.org/snailman/acrdrill.htm If you can find the untwisted drill bits that are used in the Yankee type push drills, they serve a similar purpose. This also works for brass.
A few drops of water with liquid dishwashing detergent in it will help as well.