Chain grinding and filing thread

[Skeans1]

Why would you believe that you need the vice to swing on a center axis ??

Done on my Simington
View attachment 130241

And, obviously, it needs to be done again after the chain saw a bit of use

Is that a 404 or 3/8 cutter? Sure looks like a small cutter. I’m thinking of using the whole cutter I can shape the wheel width to the same as what I fall timber with vs a super small cutting surface.


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[brshephard]

@Philbert -that shelf doesn't help when grinding, it's just a necessary evil.
You can't set up a square grinder to clean the whole gullet.

 

[Skeans1]

@Philbert -that shelf doesn't help when grinding, it's just a necessary evil.
You can't set up a square grinder to clean the whole gullet.

You can on a pro sharp with another wheel and tilting the vise on more of a downward angle.


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[Duane(Pa)]

Why would you believe that you need the vice to swing on a center axis ??

Done on my Simington
View attachment 130241

And, obviously, it needs to be done again after the chain saw a bit of use

On my swing arm, I dress the"top" surface of the stone/wheel to change that angle. Shallow angle on stone for milling/durability, steeper angle on stone to duplicate the 25-30* that most round chains start out with from the factory.

 

[huskyboy]

I personally don't like any shelf, and I remove it with a round file. They say the shelf helps make a straight cut, but I haven't noticed a difference.

Rakers being even make a straight cut.

 

[p61 western]

Rakers being even make a straight cut.

Read the whole article from madsens. Some timber fallers also swear by it. There might be something to it, but I remove them.

 

[Wolverine]

This was a chain ground by Jasha. Y'all may know more about him than I, I just remembered the name. It was my first experience with square chain (5/'15). I think he's a west coaster.

 

[Wolverine]

 

[huskyboy]

Read the whole article from madsens. Some timber fallers also swear by it. There might be something to it, but I remove them.

Oh I agree with getting the gullet, just that rakers being even is important too. Some people fuss over uneven chain tooth length on regular round work chains... and that does not matter. The chain will cut straight as long as the rakers are pretty even.

 

[p61 western]

Y

Oh I agree with getting the gullet, just that rakers being even is important too. Some people fuss over uneven chain tooth length on regular round work chains... and that does not matter. The chain will cut straight as long as the rakers are pretty even.

Yep tooth size don't matter near as much as rakers. The husky guage works well for me.

 

[smokey7]

That last photo of jashas chain looks to have a second operation done to almost sharpen the gullet? Definatly another angle and step taken instead of knocking it down with a round file or grinding it down round style its got a square acute angle there. But..... Why????? I am intrigued at the whole square grinding vs filing vs round ground vs round filed vs dremmel/timberline type of sharpening. Ive recently in the last 3-5 years gotten very good sharpening round chains. Now yall got me lookin to up my game again. I keep going back and forth on if i need to or not. I mean my round stuff is very very fast smooth and pretty dang durable. How much better could a square chain be then a very good round chain? How could those very sharp square cutters possibly be more durable then a round ground work chain at realistic angles be? See my delima?i think others must be in a similar boat as i am with being real pleased with the round they do and wondering how square could really be that much better.

 

[Duane(Pa)]

View attachment 130255 View attachment 130256 View attachment 130257

Double whammy. It looks like some kind of duplex grind. Was it ordered for a certain purpose?

 

[Moparmyway]

@smokey7
I was in your shoes a few years back

It’s better, try it

 

[Duane(Pa)]

That last photo of jashas chain looks to have a second operation done to almost sharpen the gullet? Definatly another angle and step taken instead of knocking it down with a round file or grinding it down round style its got a square acute angle there. But..... Why????? I am intrigued at the whole square grinding vs filing vs round ground vs round filed vs dremmel/timberline type of sharpening. Ive recently in the last 3-5 years gotten very good sharpening round chains. Now yall got me lookin to up my game again. I keep going back and forth on if i need to or not. I mean my round stuff is very very fast smooth and pretty dang durable. How much better could a square chain be then a very good round chain? How could those very sharp square cutters possibly be more durable then a round ground work chain at realistic angles be? See my delima?i think others must be in a similar boat as i am with being real pleased with the round they do and wondering how square could really be that much better.

It is a slippery slope. If I hadn't got my grinder for what I paid, I would still be rolling it around in my head. I just knew that I would NOT be filing chain. No friggin time to grind let alone file.

 

[Duane(Pa)]

@Icepick69 will sell you a damn nice chain if you want do dip your toe in the water.

 

[Skeans1]

That last photo of jashas chain looks to have a second operation done to almost sharpen the gullet? Definatly another angle and step taken instead of knocking it down with a round file or grinding it down round style its got a square acute angle there. But..... Why????? I am intrigued at the whole square grinding vs filing vs round ground vs round filed vs dremmel/timberline type of sharpening. Ive recently in the last 3-5 years gotten very good sharpening round chains. Now yall got me lookin to up my game again. I keep going back and forth on if i need to or not. I mean my round stuff is very very fast smooth and pretty dang durable. How much better could a square chain be then a very good round chain? How could those very sharp square cutters possibly be more durable then a round ground work chain at realistic angles be? See my delima?i think others must be in a similar boat as i am with being real pleased with the round they do and wondering how square could really be that much better.

That lower grind was done on a pro sharp, they have a setting where you can grind back the gullets just like that. They aren’t more durable to say but when done correctly it’s a faster, much smoother, and you can add bar length vs a round grind chain.


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[Skeans1]

This is the first cut of the day so the chain is a little grabby, but I can let go of the saw and let her eat if the cutters are even.

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[Duane(Pa)]

That lower grind was done on a pro sharp, they have a setting where you can grind back the gullets just like that. They aren’t more durable to say but when done correctly it’s a faster, much smoother, and you can add bar length vs a round grind chain.


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[Duane(Pa)]

This is the first cut of the day so the chain is a little grabby, but I can let go of the saw and let her eat if the cutters are even.

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That was pretty dang cool!

 

[Wolverine]

Double whammy. It looks like some kind of duplex grind. Was it ordered for a certain purpose?

Have to ask @psuiewalsh , he sold it to me. It was an oddball DL and fit my bar. 119 if I recall.