1. What is the best source for delrin to make rollers? Is there anywhere that sells a delrin "tube" with the proper inner and outer diameter, or must you always buy rod and drill it? Does it usually need to be ordered online, or can it often be sourced locally (and if so, what kind of store would carry it)?
2. Are there any good alternatives to fish skin for testing the seating of clarinet pads...preferably something that is a common household material?
Thanks for your help!