+1 on Roberts description. Tenon Saws are filed rip tooth. Carcass Saws are filed x cut. Of all the backsaw makers listed within this thread, Lie Nielsen is the only 1 that has a good understanding of this principle.. https://www.lie-nielsen.com/product/...-rip?node=4150 https://www.lie-nielsen.com/product/...saw-?node=4146