Circular Saw Blade Sharpening
Sharpening of circular saw blades is probably something you will not want to do for yourself unless you use a lot of blades. In that case, you may be able to justify the expense of the equipment and the learning curve. That’s not to say the circular saw blade sharpening equipment has to be expensive – it does not. But the less expensive equipment does not offer the precision of the multi-thousand dollar machines so one must learn how to compensate for the lack of precision and introduce human hands to the task. That is what I do.
The first step I use is to make sure the blade is true, meaning that it has not been over-heated and therefore warped. When I receive a saw blade to be sharpened, I place it on the machine, which is perfectly level, and rotate the blade throughout its radius against a standard.
Second step is to clean the blade thoroughly and look for defects such as broken teeth or cracks. Any with damage are not sharpened. By the way, the cleaning also protects my equipment from getting gummed up with any goo on the blade.
Circular saw blade sharpening prices is straightforward. My fee is $3.50 plus twenty cents per tooth. Sharpening of each tooth goes pretty fast AFTER the blade is set up. It has to be level and in alignment for each cut. Setup takes longer than sharpening.
Circular saw blade sharpening angles vary from manufacturer to manufacturer and blade to blade. Most customers do not recognize that the outside edge of each tooth as an angle set parallel to the rotation direction so there are actually two edges to sharpen for each tooth. The outside edge does not require as much work as the face of the tooth but it is necessary to make sure each tooth edge facing the circumference travel plane are of the same depth.