Reply by MrRon

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Posted on Brittleness of carbide saw teeth?

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4769 posts in 3241 days

#1 posted 09-17-2012 10:23 PM

C4 carbide is not the same for all manufacturers. I used to sharpen blades years ago and never came across this problem. I don’t know what could cause the teeth to fracture as you described. I can only guess it’s something the sharpening service did to cause the subsequent failure. Only one possibility comes to mind; they used a very caustic chemical to clean the blade and that may have altered the chemistry of the carbide to make it more brittle. I would contact them and ask what they used to clean blades. One has to remember; sharpening services make their money from volume sharpening for industrial customers. They usually don’t put the attention into sharpening one blade for a customer as they would for a volume customer.

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