I believe my saw is locked to 5000 rpm.

I know that chop saws and cold saws usually used for metal run a lot slower, but you can buy metal-cutting blades for regular circular saws. I understand that I would have to move very slowly compared to cutting wood, but I can’t slow down the blade itself.

Oil’s a good call that I hadn’t seen mentioned yet.

My saw has a built-in clamp, but it’s fairly cheap. I’d feel better using a proper clamp for sure.