FREUD presents Technical Tool Tips:
• For the Correct Use of a Saw Blade
About Tooth Geometry to Improve Cutting Finish
About Hook Angle
• About Blade Alignment on a Table Saw
• How to Obtain Blade Pitch
• Formula for obtaining Number of Teeth on a blade
• Rakers & Keyways
• Pin Hole Patterns
  • Correct Tooth's Feed Rate, Feed Rate of Material, Number of     Teeth & RPM
  • Correct Sawblade Diameter based on Tip Speed & Materials to     Cut  
  • Useful Chart for finding the right Sawblade for the job.
(Very Large .pdf file 3.9MB - slow connections should not click here)
Tips for the Correct Use of a Saw Blade 

The saw arbor must be in good condition, free of vibration.

The flanges used tro secure the balde must be of the same diameter, at least 1/3 of the blade's diameter (Fig.1).

The machine hub and flange must be parallel to each other. Check tolerances on diameters, sides and concentricity by using a dial indicator (Fig. 2). The total indicated runout should be less than .02mm (.0008").

Inspect the hub of the machine to ensure there are not burrs or debris in or around the mounting area.

The spacers must be perfectly parallel (Fig.2).

The spindle must be perfectly straight and with an h7 tolerance (Fig.3).

After continuous use, remove the blade and clean it with the appropriate solvents making sure to get rid of built up resin. For the Perma-SHIELD® synthetic coated blades it's sufficient to use warm water. In any case, avoid using caustic cleaners as they can breatk down the carbide.

The blades must be sharpened as soon as they become dull, maintaining the original tooth angles. Avoid over-running dull blades to attain maximum sharpenings from the sawblade.

For sharpening, always use the correct grinding wheels and plenty of cooling liquid.

Inspect the hub of the machine to ensure there are not burrs or debris in or around the mounting area.

Maximum reboring of the blade is 20mm of the original bore size. Above this value, the blade will lose its original tuning and overall performance will be affected (Fig 4.).

Always keep spacers and flanges clean.

While sharpening, the shoulder of the teeth must not be lowered more than needed. This operation must be done with appropriate precision machinery and never by hand. There is a risk of breaking the tip of upsetting the blade balance. (Fig. 5-6).

For typical sharpening a good rule of thumb is to remove just enough carbide to pass the worn edge of the carbide. If you can take even amounts of the ultra square tooth designed tooth, this will maximize the overall life of the blade.

On ripping machines, the feeding track must be level with the fixed table.

Before starting the cut of the material, make sure the blade is correctly locked according to the machine's specifications.

Never scribe, etch or engrave inside the flange or hub area on a saw blade.

Adjust saw height to maintain the minium top clearance projection of the saw blade.

Saw blades utilizing a score blade should be set up to cut .01mm(.004") wider than the main blade and no more than 2.0mm (.08") deep.

To reach a friendly voice, call during our hours of operation:
Monday through Friday, 9 a.m. to 6 p.m. EST
(Eastern Standard Time)

Wood Tech Enterprises
Our website:

P.O. Box 2226
Fairview, NC 28730 USA

1-800-TOOLING (866-5464)
Phone: 828-628-4414
Fax: 828-628-4490

Shipping Address:
15 Khristy Scott Lane
Fairview, NC 28730 USA

Copyright © 1998-2011 Wood Tech Enterprises, Inc. All Rights Reserved. Designated trademarks and brands are the property of their respective owners. Wood Tech is not responsible for typographical errors. Prices are subject to change. All prices are in U.S. Dollars.