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Sharpening Up

W hat Bladeowners Should Ask Their Sharpening Service

Are you using the best blade sharpening equipment?
How often do I need to sharpen my blades and bits?
When is it better to simply replace blades?
What length of lifetime should I expect out of my blade?
How quickly can you do the work?
Do you offer pick up and delivery?
Is C-4 Carbide the best grade to use?
How do I identify a good router bit?
What is the best type of blade to cut double-faced melamine board chip free?


Are you using the best blade sharpening equipment?
It’s important to know what kind of machine and grit wheel are being used on your blades. Bull Sharpening uses computer numerical control (CNC), the most advanced system available. CNC allows accurate and uniform grinding, so your blade’s teeth are ground the same amount -- an amount which is appropriate to your blade. These are the same machines used by manufacturers to produce the blades. Sharpening with 400 grit diamond wheels and proper coolant -- just as Bull Sharpening does -- returns your blade to new or better condition.

How often do I need to sharpen my blades and bits?
Blade owners should know how often their tools need to be sharpened. Using a tool that needs to be sharpened will shorten the life of the tool and may damage the material you’re cutting. Of course, this depends on what blade you’re using, how much you’re cutting and what you’re cutting, but your sharpener should be able to give you guidelines based upon those factors. Signs of a blade that needs to be sharpened are chipping, burning or discoloration of the wood, smaller chips (dust), increased cutting noise, discoloration or sap on the tool, and even smoke.

When is it better to simply replace blades?
When the cost of sharpening or repairing a blade exceeds 50 percent of the cost of a new one, you might consider replacing it. Be sure to get an estimate from your sharpening service on especially worn blades before work is begun.

What length of lifetime should I expect out of my blade?
Normal industrial quality carbide saw blades should last through 15 sharpenings provided the blades are sharpened as needed. Excessive use of a blade without regular sharpenings will shorten the life of the blade.

How quickly can you do the work?
For the sake of your business or home project, it’s important to know what the turnaround time on your order will be. Bull Sharpening returns local and out-of-state orders within one week, while most companies will complete projects within two to three weeks. Shipping time should also be taken into consideration.

Do you offer pick up and delivery?
Bull Sharpening offers both services locally which are included in their one-week turnaround time. If you are not on a pick-up route, Bull Sharpening handles your work through UPS.

Is C-4 Carbide the best grade to use?
Not necessarily. C-4 may be fine for cutting manmade wood products (MDF) and plastics, but C-2 should be used for ripping or with non-ferrous metals. The manufacturer of the tool usually selects the proper grade and type of carbide for the tool's application. It is best to discuss your application with your supplier so that you purchase the proper tool.

How do I identify a good router bit?
High quality router bits have bodies that are machined from solid tool steel, not castings. The carbide should be thick and finely ground, and evenly brazed to the body with no voids. Form bits will have some shear angles for smoother cutting.

What is the best type of blade to cut double-faced melamine board chip free?
This depends on the equipment available to you. If you have a scoring saw, use a triple chip blade with the scoring saw. The scoring saw must be properly set to cut chip free on the bottom. Without scoring you have two choices --- hollow face or high alternate top angle-negative hook blades. You should try both styles to determine which gives the best life and cutting quality in your operation. Bull Sharpening can supply and sharpen all these types of blades.


Bull Sharpening Service, Inc.
6332 W. Roosevelt Road, Oak Park, IL 60304
Telephone: 708/386-2365 Fax: 708/386-3248 E-Mail: info@bullsharp.com

Copyright © 1996 Bull Sharpening Service, Inc.