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Anyone using these CBN wheels?

Crzybowhntr

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wcorey

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Doesn't say what grit size it is...
 

stihl livin

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I have some that came from a place in Minnesota. Purchased second hand from Philbert. I really like them and have been pleased with the results. I’ll walk out to the garage tomorrow and see if I can find what grit they are.
 

Philbert

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I know nothing about this product, but following the link you supplied gives conflicting information.

‘Made proudly in the USA’
‘MADE IN CHINA’
‘Grit Material: Diamond’
‘About this item - Cubic Boron Nitride’

Philbert

IMG_6883.jpeg
IMG_6882.jpeg
IMG_6885.jpeg
 

Woodwackr

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Duane(Pa)

It's the chain...
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Does anyone make a square-grind CBN?
Here’s the latest from me. I’ve switched over to the CBN wheels for my grinding and I think I’m happy. I use Diamondwheel’s 4 3/4” diameter 3/16” for round grind and gullet/raker removal and I sprung for one of Cowlitz River Rigging’s CBN Square grind wheels. At $300 it was a bit of a risk considering I had no idea what angles were set up in the wheel. It’s also an electroplated wheel so the abrasive is only skin deep. I was reassured it would be good for “hundreds of chains” and could be plated again for half the original cost.

When talking with the fellow at Cowlitz I was told the wheel would only work on the Simington swing arm, not on a Silvey RSII. After using it on the Simington I think the Silvey certainly could be set up to use it.

I went from one extreme to the other when trying to find a suitable grind and found the best (so far) by moving the chain in as far as possible and lowering the chain holder as low as you can go.
View attachment 404605
Here are the results on a 3/8 .063. I was able to get this with very little material removal. It went very fast. There were a few cutters where the side plate didn’t fully develop and a few where I just nicked the chassis. I was having trouble getting the chain to lie flat in the holder (new .063) and I think that contributed to those exceptions. View attachment 404607
The wheel is 6 3/4” in diameter and is steel (heavy). There is NO dust and no dressing the wheel. That contributes to the speed of the operation. I back my grinder up to my gunsafe and the iron filings bounce off the door and fall to the floor where I can vacuum them up.
It’s great. The absence of the dust and no dressing is what I’m happiest with. The grinding is at least as good as with a stone wheel and maybe could be better with more experience .
View attachment 404608
I’m very happy with all this. I will probably move it over to the Silvey and give it a try. I’ll measure the distance from the chain holder to the bottom of the wheel and lower the slide on the Silvey to match. It should run fine.
Edit: I was so pleased with the outcome I forgot to mention a big CON concerning the Cowlitz wheel. It didn’t fit my 1” arbor. It should have, it’s advertised as having a 1” hole. It came in at .980 as best as I could measure. Wasn’t too big a deal for me as I have access to a lathe, and was able to get it just right. But for someone who does not and paid $300, I recon it’d be a big deal. I called Cowlitz and was told they were aware and were working to get it fixed with the manufacturer.
 

Loony661

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Side note: Winona Van Norman was started in Winona, MN where I grew up. And a childhood friend of mine was a Van Norman… They made some great industrial machinery, including crankshaft grinders and whatnot, before they sold out. They no longer exist in Winona.
 
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