Hi Don;

I agree that the photos of saw marks in the barn guide book are confusing. There may be cases where you cannot tell the difference. One piece of evidence which sometimes can be seen is a small jog in the saw marks from when an up-and-down saw lurched forward or backward while cutting; I do not believe this happens with band-sawn material. That is all I can add.

Jim

The closer you look the more you see.
"Heavy timber framing is not a lost art" Fred Hodgson, 1909