HELP! Anyone use CBN wheels for grinding chain?

[davidwyby]

Would you rough in first grind , then finish with the 300 grit assuming, ?

Yes. Both wheels are the same shape. Pretty sure the 300 would overheat the cutter if trying to remove too much material.

 

[Squareground3691]

Yes. Both wheels are the same shape. Pretty sure the 300 would overheat the cutter if trying to remove too much material.

Yep

 

[Squareground3691]

Yes. Both wheels are the same shape. Pretty sure the 300 would overheat the cutter if trying to remove too much material.

Like to see a fine well groomed.404 ,

 

[davidwyby]

Like to see a fine well groomed.404 ,

Kind of a narrow wheel, on .404 it might look like Hexa.

 

[davidwyby]

300 grit CBN from Baltic abrasives.

Factory stihl on left

All other methods I tried leave a shiny and/or ragged cutting edge

 

[davidwyby]

It does heat the tooth quicker if I’m not careful. I wouldn’t use it for fixing a messed up chain, just touching up.

 

[davidwyby]

I looked at it with a loupe, my buddy who’s into sharpening other stuff has some eq to take pics I think

 

[PA Dan]

Looks great David! Do any cutting yet?

 

[davidwyby]

Looks great David! Do any cutting yet?

Next week

 

[wcorey]

The ragged edges are mostly just the plating that flakes right off as soon as it sees wood. Grind off some plating near the edges before sharpening like the race guys do and it might be easier to compare results.
It would seem that a finer edge would hold up longer though, how much longer is the question...

 

[davidwyby]

@Armbru84 Any thoughts?

 

[Philbert]

Can you post those cutter photos alongside yout best filed and conventionally ground cutters?

Many years ago, on A.S., I ‘spit- balled’ a thought about serrated teeth on chainsaws: would they ‘saw’ through wood fibers better? Maybe on certain types of wood or cuts?

You might imagine the reception that idea received from ‘the real’ sawyers.

I generally assume that a smoother cutting edge is better (?). But the proof is in the cutting.

 

[davidwyby]

Can you post those cutter photos alongside yout best filed and conventionally ground cutters?

Many years ago, on A.S., I ‘spit- balled’ a thought about serrated teeth on chainsaws: would they ‘saw’ through wood fibers better? Maybe on certain types of wood or cuts?

You might imagine the reception that idea received from ‘the real’ sawyers.

I generally assume that a smoother cutting edge is better (?). But the proof is in the cutting.

Bunch of random pics of cutters

Been saving these, lots are from this forum, but why keep to myself? Maybe it will help someone and or generate some discussion and learning. need to experiment and see if there is any benefit to putting the very fine sharp edge on with the dremel stone/diamond

opeforum.com

 

[Khntr85]

I’m getting 300 grit wheel from Baltic Abrasives

I think there might be some durability and maybe speed to gain by have a smooth sharp edge. Like sharpening a knife or axe with a stone vs. a grinder. Not rough and microserrated.

I just went to their site, do they have a section just for chainsaw chain grinding???


Also could you take a pic of the wheel I would like to see it exspecially since it’s so fine grit, thanks!!

 

[PA Dan]

Next week

Is it next week yet?

 

[davidwyby]

Is it next week yet?

Nope

At the rate I’m going it won’t get tested until my GTG

 

[Philbert]

Nope

At the rate I’m going it won’t get tested until my GTG

Oooh!

Do I need to get that on the calendar?

Philbert

 

[davidwyby]

Oooh!

Do I need to get that on the calendar?

Philbert

Come on down. End of Feb

 

[davidwyby]

I sharpened a 42” .404 with it last night…palms today…not sure I want to swing the 3120…

 

[Khntr85]

I have both Diamond Wheels and Foleys brand CBN wheels, I leave a Diamond Wheels brand 1/8" wheel in one grinder for .325 and 3/8 LP chain, and a Foleys brand 3/16" wheel in another grinder for full 3/8 and .404 chain. The Diamond Wheels brand wheels are aluminum and a very fine grit, the Foleys brand wheels are steel (heavier) and have a reasonably coarse grit compared to the Diamond Wheels brand. Many of the chains that I sharpen (for others) are in pretty bad shape so the CBN wheels hold up extremely well and tend to produce less heat while grinding. Even so, I have set up a Kool Mist device and have been using air & water on the cutters while grinding. There is actually very little water sprayed on the teeth while grinding to keep them cool so the mess is minimal.

View attachment 397549

Others will have different opinions but I can't imagine ever using a vitrified abrasive wheel again.

FWIW, I also have a Diamond Wheels brand diamond grit wheel for sharpening carbide chains...it gets very little use.

Mark

Hey which one of those cbn wheels do you like best and which leaves the best finish???
I have used a diamond wheel brand wheels for years I love them…