There are already 2 questions on here that deal with this but they both deal with this at large/massive scale:
Smooth tree trunk cross section
Flattening the face of a board without using a jointer
I'm trying to smooth a tiny cross section (6 inches wide) of a mesquite tree to make a coaster and the solutions discussed in those questions are way too over the top.
So far I've tried a cordless sander (Ridgid R86064B) with 80 grit paper but haven't made much progress. I also tried using a plane but because of the circular grain and the small size wasn't able to get that to work.
Suggestions?
