I just picked up my first shoulder of leather (well, half shoulder), and i need to cut a strap from it. The only time ive ever done this was from a hide that already had a nice, straight edge prepared and all i had to do was make sure i didnt mess up with my strap cutter.
I was wondering if there was some theory or technique to straighten out the edges of the hide, beyond just going at it with a ruler and a razor blade?