rccola2
Feb 19, 2010, 02:01 PM
How do I sharpen HSS circular saw blades. I have a collection from over the past 30 years. I use to send them out, but the local shops have gone out of business, especially since the carbide tips became popular.
Scleros
Feb 19, 2010, 09:05 PM
The local shops probably had sharpening machines like in YouTube: Sharpening a Circular Saw Blade (http://www.youtube.com/watch?v=vXN8yOzOd3g). For HSS, the same results can be obtained with diamond hones or triangular slim taper files, a home-made saw vise, and patience. There are numerous articles online for sharpening handsaws, such as Vintage Saw's Saw Filing Treatise (http://www.vintagesaws.com/library/primer/sharp.html). The principles can be extended to circular saws to restore the teeth to their original geometry. There is also a risk with circular blades that is not present with hand saws, that if sharpened improperly the result can be a very dangerous tool to use.
Another option: Harbor Freight Circular Saw Blade Sharpener (http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=96687)