Grizzly G0621 owner manual Blade Selection Metal Cutting, To select the correct blade TPI

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Blade Selection (Metal Cutting)

Selecting the right blade for the job depends on a variety of factors, such as the type of material being cut, hardness of the material, material shape machine capability, and operator technique.

The chart below is a basic starting point for choos- ing blade type based on teeth per inch (TPI) for variable tooth pitch blades and for standard raker type bi-metal blades/HSS blades. However, for exact specifications of bandsaw blades, contact the blade manufacturer.

To select the correct blade TPI:

1.Measure the material thickness. This mea- surement is the length of cut taken from where the tooth enters the workpiece, sweeps through, and exits the workpiece.

2.Refer to the "Material Width/Diameter" row of the blade selection chart in Figure 38 and read across to find the workpiece thickness you need to cut.

3.Refer to the "Material Shapes" row and find the shape and material to be cut.

4.In the applicable row, read across to the right and find the box where the row and column intersect. Listed in the box is the minimum TPI recommended for the variable tooth pitch blades.

5.The "Cutting Speed Rate Recommendation" section of the charts offers guidelines for vari- ous metals, given in feet per minute (speed FPM) and meters per minute in parenthesis. Choose the speed closest to the number shown in the chart.

Material Width/Diameter

Material Shapes

Teeth Per Inch Variable Pitch Blades

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Figure 38. Blade selection and speed chart.

-32-	G0621 Wood/Metal Bandsaw

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Contents Model G0621 WOOD/METAL Bandsaw Page Table of Contents Foreword IntroductionContact Info Machine Data Sheet G0621 Wood/Metal Bandsaw Identification Safety G0621 Wood/Metal Bandsaw Additional Safety Instructions for Bandsaws 220V Single-Phase Circuit RequirementsItems Needed for Setup SetupSetup Safety UnpackingMain Components Figure Qty InventoryFasteners and Tools not shown Qty Hardware Recognition Chart Site Considerations Clean UpPlacement Location Floor LoadAssembly To assemble the bandsawPage Dust port installation G0621 Wood/Metal Bandsaw To connect a vacuum hose Dust Collection Blade TrackingTo center track the blade Test Run Changes in the blade tension may change the blade trackingTensioning Blade Adjusting Support BearingsTo adjust the support bearings To tension the bandsaw bladeG0621 Wood/Metal Bandsaw Adjusting Blade Guides To adjust the upper and lower blade guidesTo set the positive stop 90˚ to the blade Adjusting Positive StopSetting Table Tilt Scale to 0˚ To calibrate the pointer on the table tilt scaleTo align the miter slot parallel to the bandsaw blade Aligning TableAligning Fence To align the fence parallel with the miter slotOperation Safety Basic Controls OperationsStraight Cuts Workpiece Inspection WoodOverview Irregular CutsTo tilt the table Table TiltGuide Post Positive stop must be removed to move the table to the leftTo make a rip cut RippingCrosscuttingTo make a 90˚ crosscut Resawing Typical resawing operationCutting Curves Stacked Cuts To complete a stacked cutBlade Width Blade Selection Wood CuttingBlade Length Tooth StyleBlade Breakage Tooth PitchBlade Care Most common causes of blade breakage areBlade Selection Metal Cutting To select the correct blade TPIBlade Changes To replace the bladeScale Calibration To calibrate the scaleG7315-Super Heavy-Duty Mobile Base AccessoriesGrizzly Bandsaw Blades G1928-Bandsaw HandbookSchedule MaintenanceCleaning LubricatingTroubleshooting ServiceMotor & Electrical Cutting Operations MiscellaneousServicing V-Belts Accessing V-BeltsChecking V-Belts Tensioning/Replacing V-Belts To shim the table Shimming Table Blade LeadTo skew your fence Wheel Alignment Verifying Upper/Lower Wheels are CoplanarTo adjust the lower wheel Adjusting Lower WheelShimming Upper Wheel Electrical Component Wiring Motor junction box wiringWiring Diagram Breakdown Main Parts List DescriptionTable/Blade Guides Parts Breakdown Secondary Parts Breakdown Stand Parts Breakdown Fence Parts Breakdown Safety Labels Parts Breakdown Warranty and Returns Page Page Page