So I'm busy with a small Ropp pipe. The bowl is coming on nicely, but the stem is problematic. It appears to be bone. I managed to clear most of the stains and gunk off with Polydent and an ultrasonic cleaner.
There are unfortunately some major bite marks. My choice is to leave as is ( but it is nearly though to the draft hole) or to fill with superglue (which will show I'm quite certain)
Thoughts? Advice?