Evening all. I survived the sinking of the boat and am home now working on an old estate pipe. Had a question for the experts out there. It's a rusticated pipe with what looks like multi layers of shellac on it. Now I was able to sand all the shellac off the high spots but the shellac in the low area looks awful. Cracks all through the low areas, chipping off in some places and sticking in others. Any ideas on how to get the left over shellac off the low areas?