ArtMetal

Check these links out. There are some good demo's on this subject over at the Metal Artist Forum:

This demo is on making chasing/repousse tool:

http://www.innovationaliron.com/demos/11-02-06/Chat%20log4.htm

This demo is on actually using the tools to do chasing/repousse:

http://www.innovationaliron.com/demos/12-07-06/Chatlog6.htm

Walker