Since my own favorite bushcraft knife is forged from a mower blade i figured i should reply.
Making awn mower balde knfe.
By rg2013 in outside survival.
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Find the nut that holds the mower blade to the deck.
Make a lawn mower blade knife.
Make a sweet knife out of a old junk lawn mower blade.
When i put clay onto the blade i go about half way up the tang in order to leave a section of metal to hold onto with the pliers when i do the quench.
So from a lawnmower blade you can make a knife that will act like a lawnmower blade it will bend instead of breaking and smoosh instead of chipping.
Put simply a thick layer of clay goes around the spine and half of the handle so while the edge of the blade is left exposed is quenched so it is hardened.
Make a lawn mower blade knife.
I ve found a wide variety of steels used to make mower blades from around 02 carbon un hardenable basically mild steel on up to something more like 08 about like 1080 steel a respectable carbon content for knifemaking.
It won t hold an edge very long but it will be well nigh indestructible in the face of abuse.
If the blade is exceptionally dirty or caked spray it with some penetrating oil and scrub with a stiff brush.
Take a dry rag or microfiber cloth and clean the blade before sharpening it.
Use a wrench to loosen the nut until the mower blade releases.