Panel optimisation, machining and yield equations.
Feed rate (mm/min) = RPM x Number of flutes x Chip loadSurface speed (m/min) = pi x Tool diameter x RPM / 1000Material removal rate = Feed x Depth of cut x Tool dia / 1000Effective usable length = Cut length - Total kerf lossMDF ~750, Particle ~650, Plywood ~680, HDF ~900 kg/m3Middle hinge gap = (span between end hinges) / (hinges - 1)Bent lamination ~ 2x thickness | Steam ~ 10x | Plywood ~ 12xSolid cold bend ~ 50x thickness (very limited)Usable area = (Sheet_L - 2xtrim) x (Sheet_W - 2xtrim)Grid parts/sheet = floor fits in length x width (best orientation)Theoretical max = floor(Usable area / Part area)Material efficiency % = (Part area x Qty) / (Sheet area x Sheets) x 100Waste % = 100 - Material efficiencyLeaves across = ceil(Panel width / Effective leaf width)Leaves down = ceil(Panel height / Effective leaf height)Total leaves = across x down (from one flitch, in sequence)Total thickness = face + back + core + (cross-bands x N) + glue linesParts across length = floor((Sheet_L + kerf) / (Part_L + kerf))Parts across width = floor((Sheet_W + kerf) / (Part_W + kerf))Parts per sheet = parts_L x parts_W (best of both orientations)