Robert Smith wrote:

I work in a machine shop, so I
purchased a .05 wide metal cutting slitting saw that is 3" in dia. I
also got a bearing that had a 2" o.d. I then made an arbor to fit
into my PC router, that mounts the bearing right above the slitting
saw. My problem is, when I use it I think the router is going way to
fast for the slitting saw, because it turned blue from the heat. It
cuts the slot, but I don't think it's going to last through a whole
lot of them.

Can you run it in a drill press?

-- Mark