BLADE WIDTH Use the blade width recommended by the machine manufacturer, except for contour cutting in vertical machines when you should use the chart below. PITCH Pitch is the number of teeth per inch/25mm. Cutting thinner sections requires a finer pitch (more teeth per inch/25mm). Thick sections require coarser pitches (fewer teeth per inch/25mm). The charts are good guidelines. Because the cross section limits in the chart are broad and overlap, choose a coarser pitch if the speed of cut is most important. (Choose a finer pitch if finish is most important.) Forcuttingtubesandprofiles,usethehorizontallinetofindtheoutside diameter (tube) or the largest section (profile). Find the thickness (tube/profile) using the vertical column. With that information, cross them to find the recommended pitch. (chart below). Choosing the Correct Blade 3 4 Tubes and Profiles Wall Thick- ness Outside diameter of tube or maximum profile section length (in) in 3/8" 3/4" 1-5/8" 2-3/8" 3-1/4" 4" 4-3/4" 6" 8" 12" 16" 20" 24" 3/32" 14-18 14-18 10-14 10-14 10-14 10-14 8-12 8-12 8-12 8-12 6-10 6-10 5-8 1/8" 10-14 10-14 10-14 10-14 10-14 8-12 8-12 8-12 6-10 6-10 6-10 5-8 5-8 5/32" 8-12 8-12 8-12 8-12 6-10 6-10 6-10 5-8 5-8 4-6 4-6 4-6 3/16" 6-10 6-10 6-10 6-10 5-8 5-8 5-8 5-8 4-6 4-6 4-6 4-6 1/4" 5-8 5-8 5-8 5-8 5-8 5-8 5-8 4-6 4-6 4-6 4-6 3-4 5/16" 4-6 4-6 4-6 4-6 4-6 4-6 4-6 4-6 3-4 3-4 3-4 3/8" 4-6 4-6 3-4 3-4 3-4 3-4 3-4 3-4 3-4 2-3 2-3 1/2" 4-6 3-4 3-4 3-4 3-4 3-4 3-4 2-3 2-3 2-3 5/8" 4-6 3-4 3-4 3-4 3-4 3-4 2-3 2-3 2-3 2-3 3/4" 4-6 3-4 3-4 3-4 3-4 3-4 2-3 2-3 2-3 2-3 1" 3-4 3-4 3-4 3-4 2-3 2-3 2-3 1/4-2 1/4-2 1-1/4" 3-4 3-4 3-4 3-4 2-3 2-3 2-3 1/4-2 1/4-2 1-5/8" 3-4 3-4 3-4 2-3 2-3 2-3 1/4-2 1/4-2 2" 3-4 3-4 2-3 2-3 1/4-2 1/4-2 1-1/2 2-3/8" 2-3 2-3 1/4-2 1/4-2 1-1/2 Section to be Cut (in) Constant Pitch (TPI) Variable Pitch 5/32" to 3/8" 32 or 24 14-18 1/4" to 1/2" 18 or 14 10-14 1/2" to 3/4" 14 or 10 8-12 3/4" to 1" 10 or 8 6-10 1" to 1-1/2" 8 or 6 5-8 1-1/2" to 3-1/2" 6 or 4 4-6 3-1/2" to 7" 4 or 3 3-4 7" to 10" 3 2-3 10" to 16" – 1/4-2 14" to 20" 1/3 1-2 16" to 32" 1/3 1-1/2 Over 30" 1 .8-1/3/.9-1/1 1/2" (13mm) 3/8" (10mm) 1/4" (6mm) 3/16" (5mm) 1/8" (3mm) 1/8" (3mm) 5/16" (8mm) 5/8" (16mm) 1-1/2" (38mm) 2-5/8" (67mm) Radius Blade Width 14 C hoosing the B lade