I sharpen mine on average every 100 holes but I'm OCD when it comes to keeping any blade sharp. I have been using the same set now for 5 years. Same with my hand auger but thats almost 20 years old but I did replace the blades once because the rubber strap broke on the cover and the blades slammed into my tailgate about 15 years ago.
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" Everything in life that I enjoy is either illegal, immoral, fattening or causes cancer!"
"The problem was this little thing called the government and laws."
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