Here is a video of the Pumicing and polishing techniques I use on the retainers I make. Pumice Substitute: http://www.garreco.com/abrasives.html#resilience High Shine: http://jbcandcompany.com/shopping/shopdisplayproducts.asp?id=251&cat=Polishing+Compounds I also get my pumice wheels from JBC: http://jbcandcompany.com/shopping/shopexd.asp?id=613