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Reply by Jim Baldwin

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Posted on Lawn mower blade as tool steel?

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Jim Baldwin

55 posts in 2170 days


#1 posted 06-20-2013 04:48 AM

As a rule, if you can file the metal than it’s soft steel (lawnmower blades are sharpened with a file). If the file slides across without removing material, than it’s hard. Of course soft steel can be hardened by heating and quenching (machine shop 101). In general all old handsaws, circular, band and hack saw blades are good tool steel as well as old files. Gardening tools are not hard with the exception of the machete which is good spring steel. Don’t overlook old putty knives and scrapers which are also hard.

Do I have to say “never use scrap steel as knives, in powered rotating equipment? (homemade junk kills people).

-- Jim Baldwin/jimhbaldwin@gmail.com


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