?Estimate the knife marks left by a planer cutter head.
Feed per knife is the distance the board travels between successive knife cuts: feed speed ÷ (head rpm × number of knives). Scallop depth is the height of the ridge left between those cuts.Planer Knife Marks
Gray boxes are editable cells; all others are calculated.
Planer Knife Marks
Cutter Head Data
?Cutting circle diameter of the cutter head, measured to the knife tips.Cutter head diameter
in
?Number of knives on the cutter head that cut the same face. Must be a whole number of 1 or more.Number of knives
Head rpm
rpm
Feed speed
fpm
Knife Mark Outputs
?Height of the ridge (scallop) left between successive knife cuts, based on the trochoidal knife path.Scallop depth
0.00000in
?Feed speed ÷ (head rpm × number of knives): the distance the board advances per knife cut.Feed per knife
0.000in
?Number of knife marks per unit length of board: the inverse of feed per knife.Knife marks
0.000/in