Table of Blade Measurements

I have added a page to the Battle of the Blades review which gives a table of all the blade measurements side-by-side. Table of Blade Measurements

There were a few unusual measurements that came out of it, but all in all, it is the performance of the blade that really counts. Other than perhaps carbide thickness, which gives an indication of how much resharpening the blade can take.

One item that offered some correlation between the measurement and the cut quality was blade runout.

There were a few blades with a significant degree of runout, and each also gave a poor finish. I only get to test one blade from each, so I can’t say whether it was just a rogue blade, or batch, or if that is typical. It really did highlight the fact that it is definitely worth testing a new blade’s runout before putting it to use, and if you are not satisfied, return the blade.

The typical runout found was 0.005″ / 0.13mm. The lowest was a remarkable 0.002″ / 0.05mm. The highest was 0.030″ / 0.76mm. That blade literally screamed when it was run unloaded, with the noise going from a typical unloaded (but running) level of 95dB to 105 – 110dB after a few seconds. Not sure if one resulted in the other, but it is interesting.

It is not just the blade runout that affects the quality – variation in tooth width (the kerf) plays a large role as well.

I didn’t get into the angle of the grind and how it plays a part in quality – perhaps a job for another day.

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