Thank you. I can imagine the smell must be awful while drilling?Yes it can be done.
It's VERY tricky to get right, though, and has no re-wind button.
New, pipe (but same procedure):
Perfecting Near-Perfection :: Pipe Talk
How satisfying. A while back I got a Doug Finlay pipe I named Chonky Boi (for obvious reasons), and smoked it hard. It was perfect in every way, but gradually drifted away from that perfection in one detail. After a hundred bowls or so, I decided it needed a larger diameter chamber. (For...pipesmagazine.com
Yeah, if it’s just the edge, maybe a light top and bevel it. If the whole backside is burned you should investigate how deep it goes. It’s often pretty bad. People sometimes use a bowl coating over a burn. It might work. Or it might burn more under the coating.I'd chamfer it to reduce risk, rim surface loss, and change of chamber size.
