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How do you know when saw files need to be replaced? (lemm.ee)

submitted 9 months ago by [email protected] to c/[email protected]

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I can’t tell if I’m sharpening incorrectly or if my file is just worn out. Is there a way to tell? I read somewhere to replace after like five sharpening a but that seems really short.

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[–] [email protected] 2 points 2 weeks ago (2 children)

Files get clogged and stop working. You need to use a file card on your file after sharpening your saw (or anything else). As far as testing, paint the metal with sharpy and then file it. If the sharpy mark is gone, then the file is still sharp. But files last a long time if you care for them properly.

[–] [email protected] 2 points 2 weeks ago (1 children)

Thanks for the tips. I’m going to try that file card. I have never heard anyone mention one, but if it helps the files last longer, I’m all for it. Do you add some vinegar or something to the card as well?

[–] [email protected] 2 points 2 weeks ago* (last edited 2 weeks ago)

No, just use the card dry against the grain of the file. I learned about them back in metal shop in Junior Highschool, and they work very well.