KR Wilson Groover

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Downunder Rob

New member
Hi All
i have a KR Wilson Brearing Grooving tool.
It is missing the cutter. i was wondering if anyone could give me any details on the cutter.
Thanks
Rob
 
does this help any,
The ring with the slot is for setting the cutter to maximum depth
 

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You make your own cutter out of some 1/4 high speed steel stock. Most machine tool shop sell. It will need to be shaped using a grinder to match the groove needed.
 
It is a very unusual cutter, it just pushes in and must be free to rotate. A spring clip keeps it from falling out.
 

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I just use the small ball burr that comes with a Dremel kit. With a steady hand, the results are fine. It's dark in there so the oil can't see the difference!!
 
Thankyou 1930 Coupe
Seeing the cutter now makes sense.
As i have the jigs i may as well use them.
the guide channel on mine has been damaged so i will need to repair them first.
i assume someone tried to put a standard cutter in it with out the front guide and it took a chunk out of the guide.
i will make a drawing of the cutter for future reference.

thanks again
Rob
 
Thanks Terry.
Easily made made from high speed round stock, probably 5/16? Notice the relief angles on top and sides. Machinist call them form tools and sharpen using a abrasive honing stone.
 
The material that is being cut has to go somewhere. It usually tries to curl up. The one pictured in post #5 doesn't seem to allow for that. I think someone was looking for a way to control the cut somehow but I'm not sure how it would work or if it would even work at all.
 
rotorwrench said:
The material that is being cut has to go somewhere. It usually tries to curl up. The one pictured in post #5 doesn't seem to allow for that. I think someone was looking for a way to control the cut somehow but I'm not sure how it would work or if it would even work at all.
Click to expand...



I have used it many times and it works great and makes a very nice grove.
Are you saying that I need to stop using it and put it in the trash
 
Without going to look at it it im pretty sure mine has a cemented carbide tip. Maybe thats why the odd shape on the one shown
 
jetmek said:
Without going to look at it it im pretty sure mine has a cemented carbide tip. Maybe thats why the odd shape on the one shown
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For "ripping" thru soft metal at a snail's pace, what would the advantage of carbide be? I would think it would have been an unnecessary waste of money. Am I missing something??
 
1930 coupe said:
I have used it many times and it works great and makes a very nice grove.
Are you saying that I need to stop using it and put it in the trash
Click to expand...

I just haven't seen how a bit like that will push out the cuttings. I didn't say it wouldn't work, I just can't visualize what the cuttings are going to do. On the one in Brent's info, I can predict what the cuttings are going to do. If it works without balling material up then that's great.

If you think I inferred your last statement above in my last statement on post #10 then you are reading in something that isn't there.
 
I am happy and OK, just did not want other people to get confused.

If you tried to hog it through with one heavy cut, then it might do like you said.
I take 3 or 4 light cuts and it works great.
 
B79A4A35-2674-4B40-B473-B7BE804C80E3.jpeg. Def a brazed on tip and another broken one i found. Figured some tried to salvage a broken on by grinding it like that. Are they home made? Possibly
 
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