Plan how many boards a cut list needs including kerf.
Every cut removes blade width as kerf, so the needed stock is the parts plus kerf, divided by board length and rounded up. Ignoring kerf silently adds a hidden half-inch per cut that can run you out of lumber partway through a project.
Cut List
Boards = (part count x (cut + kerf)) / stock length, rounded up
Boards = (part count x (cut + kerf)) / stock length, rounded up Every cut removes blade width as kerf, so the needed stock is the parts plus kerf, divided by board length and rounded up.
Ignoring kerf silently adds a hidden half-inch per cut that can run you out of lumber partway through a project.
This calculator takes 4 inputs: Number of parts, Cut length, Blade kerf, Stock length. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.