There's a "friend" acquaintence of mine that was (2004) in the niche market of building custom closets. He had a cutoff saw, basicly a mitre saw, that was used for metal. He showed me how it worked with aluminium. I know the shelving he was mounting was cored with steel. Not too sure how long the blade lasted, but when I visited the shop, there wasn't a blade wrench at hand. A commercial operation, so there must have been a reasonable lifespan on the blade.
He specifically noted the blade he was using, a 10" cabinet builders blade with small carbide teeth. I "think" (impression) it was a 100 tooth blade. The teeth had a slight "set", cutting a kerf wider than the blade. A fairly cheap blade as cabinet saws go, I bought one like it for use in my own shop for woodworking.
The carbide tooth blade cut metal slower than wood, and lots of sparks. But it was working for him on light metal and plastic coated rod. I don't know how well it would work on heavier metal and couldn't bring myself to try. I have a Horrible Fright metal cutting saw with a composition blade, so didn't push the idea very far. I don't know what you want to cut, so will abstain from comment there. But it was working for my "coffee shop" buddy. Might be worth a shot. . .
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