Taper Shank Router Bits

Allan

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Hi, I picked these bits up at a garage sale. I think they are for cutting aluminum as we have a couple of boat factories in the area. They are made by Toolmasters who have been sold. I searched for info on the net with no luck. The numbers on them are: 1) 21/64" 2) 095-1124 3) 0017-201

My questions: 1) what angle is the shank taper? 2)Are there any adapters to fit them to a regular straight collet router? 3)How will they work on wood? 4)Any idea what the taper on the cutting edges is?

Thanks for any help.

IMGP0565.JPG
 
Looks like the taper is running the wrong direction. Inverted taper? Must have a special collet chuck to hold them. Definitely won't pull out of the collet chuck!
 
Never seen one like that, and Google turns up nothing:confused:
 
SO I have the only ones in captivity? That is weird. I'll have to make something to hold them since there is no parallel surface anywhere on them.
 
Have you put a micrometer on them to be sure it is a "reverse taper". I saved the pic and blew it up and some of what makes it look that way to me is shadow. What does it measure out at on the end and just before it tapers for the cutting edge?
 
Used to be a company out there that specialized in high speed routers called Onsrud. They had their own line of cutters that were used on their machines. I don't recall any with back taper shank but you never know. Ken
 
Yeah, Ken, I think that is who bought Toolmasters from what I read online.

Jim, they are definitely reverse taper. Haven't measured anything. Usually someone on this site can put paid to my questions pretty quickly. This one is a stumper. I'll just have to get down to measuring and coming up with some kind of adapter. They might make a good boring bar.
 
Here's a picture that I hope better IMGP0573.JPG shows the taper on the shank. Still haven't taken time to measure the angle with my limited equipment.

Al
 
Looks like it was designed to be used with a special reverse taper collet
 
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