I ripped a 1" piece off a 17" piece of 4/4 hard maple. Looking at the offcut, there were burn marks on the left side ( the 1" offcut ) but the main piece was as smooth as a whistle. Using a WWII thin kerf blade. Usually have no problems. Only thing different is I used one of those Micro splitters that stick in a zero clearance insert. Altho how it could burn on the inside of the free piece is puzzling to me.
Any idea what could cause this. Only thing that occurs to me considering where the burn marks are is that there were some internal stresses in the wood that causes the offcut piece to press against the left side of the blade.
Thanx,
Vic