Wood Router Bits - They work on Metal!

I've used the curved parts of various router bits for rounding over both steel and aluminium.
On my 80mm refractor I used a 1/4" roman ogee bit to produce fancy edges on some of the parts, but, polishing them after did reduce the contours somewhat.
 
I cut up carbide saw blades with one tooth .5 in with and use them for a parting tool for steel and aluminum. Work good and cheap maybe 7 per $1 used saw blade from the swapmeet.
Do saw blades need to be annealed before cutting, then retempered? And what do you cut them with? Maybe just use an angle grinder?
Thanks, Greg
 
I just use an angle grinder with a cutoff wheel and mark the blade with a marker to follow the line
 
had to use the router bit today to round over the end of a steel shaft.
Aligned with the end
router-1.jpg

fed straight in till rounded
router-2.jpg
The chips came of in crumbles rather than strings.
 
Now I need to make a routerbit tool holder for my lathe. You cause so much pain!
Did you make that worm gear yourself?
 
Now I need to make a routerbit tool holder for my lathe. You cause so much pain!
Did you make that worm gear yourself?
Not yet, I'm just altering this one for the refractor azimuth control.
 
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