Local source for knife steel

[newracer]

Used lawnmower blade.


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[Great-Kazoo]

Old flat file.

[Mtneer]

Another DIY option: http://www.thompsonsknives.com/#Items

[spqrzilla]

When I was a kid, we made knives from old files as suggested above. I'd suggest rummaging through some garage sales, or thrift store tool bins. Some times at flea markets, someone will have a big bin of old tools.