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Old 05-25-2020, 05:42 PM   #1
Downunder Rob
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Default KR Wilson Groover

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
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Old 05-25-2020, 07:06 PM   #2
1930 coupe
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Default Re: KR Wilson Groover

does this help any,
The ring with the slot is for setting the cutter to maximum depth
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Old 05-25-2020, 07:45 PM   #3
briphaeton
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Default Re: KR Wilson Groover

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.
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Old 05-27-2020, 08:02 PM   #4
Downunder Rob
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Default Re: KR Wilson Groover

thanks 1930 Coupe.
would you have a close up picture of the cutter.

Regards
Rob
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Old 05-27-2020, 09:02 PM   #5
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Default Re: KR Wilson Groover

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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Old 05-27-2020, 10:54 PM   #6
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Default Re: KR Wilson Groover

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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!!
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Old 05-28-2020, 12:27 AM   #7
Downunder Rob
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Default Re: KR Wilson Groover

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
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Old 05-28-2020, 09:30 AM   #8
BRENT in 10-uh-C
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Default Re: KR Wilson Groover

Quote:
Originally Posted by 1930 coupe View Post
It is a very unusual cutter, it just pushes in and must be free to rotate. A spring clip keeps it from falling out.
Interesting because my original cutters did not look like that. I will go down and take a picture when I have a moment.
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Old 05-28-2020, 12:46 PM   #9
briphaeton
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Default Re: KR Wilson Groover

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.
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Old 05-28-2020, 05:22 PM   #10
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Default Re: KR Wilson Groover

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.
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Old 05-28-2020, 06:01 PM   #11
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Default Re: KR Wilson Groover

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Originally Posted by rotorwrench View Post
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.


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
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Old 05-29-2020, 10:05 AM   #12
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Default Re: KR Wilson Groover

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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Old 05-29-2020, 10:10 AM   #13
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Default Re: KR Wilson Groover

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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

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??
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Old 05-29-2020, 10:56 AM   #14
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Default Re: KR Wilson Groover

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Originally Posted by 1930 coupe View Post
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
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.
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Old 05-29-2020, 11:40 AM   #15
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Default Re: KR Wilson Groover

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.
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Old 05-29-2020, 04:43 PM   #16
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Default Re: KR Wilson Groover

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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