TUTORIAL: Centering a trumpet mouthpiece in the chuck

This is for centering a trumpet mouthpiece in a lathe chuck, and getting it straight. Somemouthpiece are hard to center if they dont have a "flat spot" to hold onto, or if the mouthpiece was made with the inside off center to the outside etc. In those instances you can still do it, but its more complicated. I'll do another video for situations like that