I use trim and popcorn buds, like anything that is too small to trim comfortably,I keep it in a paper bag and let it dry out completely,then it goes in the freezer, also, when I start to get going,I fill the bucket about half way and add a half bag of ice and let it sit for a bit to get good and cold, you want your material to be as dry as you can get it and you want your water to be as cold as you can possibly get it, work the material slowly with the drill and paddle, also, work the material a few times and your going to get a nice puck when you're done