Re: bass drum hole
I'll tell you a secret that will take all the worry out of cutting that hole. Take an empty coffee can with the diameter you're looking for. Next, go turn on the stove and set the can upside down where the open end is touching the burner. As soon as you get it heated up nice and hot, take some oven mitts and grab the can, place it over the bass drum head and watch it melt a perfect circle. Be sure to get it centered up where you want it before you lower the boom. It goes very quick. It makes a nice clean cut. Good luck.