You have diagnosed the problem correctly, the router is too fast. You can
get a speed control for your router and try another slot cutter. You
probably had a hss slot cutter, and if the job will warrant the expense you
might want a carbide slot cutter.

Also, luthiers use very thin saw blade for cutting frets and such. You
could DAGS for luthier suppliers and see if they don't make a .050 saw. I'm
sorta remembering that they do.

--
Bill Pounds
http://www.bill.pounds.net/woodshop

"Robert Smith" wrote in message
...
I think I have a good question for the group

I am making a bunch of 3/4 thick parts out of oak and pine. They are
various
shapes, anything from a 3" dia. circle to 16" circle, 3" sqaure, to a
12"x18" rectangle. All these parts when done need to have a .05 wide slot
around the perimeter, centered in the width. The slot must be a minimum of
1/2" deep. 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.
My next try was to get the thinnest 10" saw blade that I could get for
my table saw. I then made and extension for my fence and stood the part on
edge and spun it through the saw blade. This worked also, but it seems a
little dangerous, if the wood would ever decide to take off. I really
wouldn't mind doing it this way, but when I checked the slot width it is
about .015 to wide. I mic'd the blade and found it was .065 across the
teeth.
My question is, does anyone have any better ideas how to put this slot
in the parts. Or do you know where I can buy a really thin 10" saw blade?

Thanks for any help
Bob