Just yesterday I came across an old defunct 10" table saw blade... I had thrown in the trash...
I gotta ask you... Is this ole blade usefull for some of that there stuff?
Plane blades... I have an old plane without a blade... could I make one?
Carving knives... worth trying?
If so, how do you cut them up? With an ole fashioned hacksaw?!
The steel on the body
of a sawblade may be too soft to hold an edge (especially a carbide one) Having said that it can be tempered. The tips of even old all steel circular saw blades were usually tempered.
I used an already hard piece of steel, an old sawzall blade in the last plane.
I saw one time on some guys site, can't remember it now, he would take soft steel and use a tiny drill bit and hacksaw to cut his plane irons. A guy can drill a series of holes along his cut line on the drill press and lessen the amount of work with the hacksaw. I have a welding shop and sharpening shop so I have tools for cutting steel, but it looked like the drill and saw worked.
Ok tempering steel. I am no blacksmith
, but this works for me. If you have a piece of softer steel you can heat it red hot with a torch, then quench it in water (or motor oil, I do that...but there are reasons why I am not suggesting anyone else does it. Stinks, fire hazard...) The rapid cooling makes the steel contract and harden, but makes it brittle. Step 2 clean the steel shiny again. Then reheat it until it starts to turn blue (but not glow, just blueing). Then set that piece of steel on something like an anvil/iron vise, that works as a heat sink and will draw the heat out of the steel. Presto, you have hardened steel that should be usable for a cutting tool. You just have to grind/sharpen it without getting it red hot again.