Oregon square ground

Yup. I see that sometimes when i use the harbor freight dremel to sharpen

 

Sondre, either of these 2 what you mentioned?
Square Ground Chisel Angles



How To File Square Chisel Chain

 

WOW! That was a great video Jason. Mr. A.D.D. actually watched the whole video! Watching him sharpen answered all the questions i had about SG sharpening.. I have a real good eye for angles (not bragging) and would probably be pretty good at it. Im going to resist as long as i can.
The only thing that surprised me was the Stihl saw on the latter half of the video!

 

Just watched the whole thing as well. Very informative...thanks.

 

No, this was an actual competition sponsored by Oregon to see who could make the best cutting chain from an off the roll loop. I think it was mostly geared towards guys with grinders, but the same geometry would apply to hand filing. Several different cuts and techniques were considered, not just speed. From what I remember there was only one chain that had become slower than off the roll after being ground. No chassis work was permitted, so essentially just tooth angles/sharpness and rakers were touched. There were some interesting looking grinds. Some had double shelves under the cutter, at the gullet, on purpose. There were reasons for all the different varieties of grinds, and they were somewhat explained.
I’ve tried finding it recently, but can’t see it anymore.

 

Put it through the paces this afternoon. Pretty sure im hooked boys.

 

Ah. I remember reading that too. Interesting info on the "shelf". I'll try and find it. I could have swore I saved a copy as pdf.

 

That’s exactly the one I’m thinking about too. I could swear I saved it too, but I can’t find it, and I can’t find it online.

 

Whaddaya gonna do with all your other chains now? Looks like you went over the edge Ron!

 

You gonna mill that nice straight Cherry log there Ron? Looks like big box store lumber.

 

On this I may have Brad

 

Yeah its dog legged for sure.

 

Any ideas as to what kind of vise was being used in that video for filing that chain? I've been pondering trying to get into the square file thing myself. That video really has piqued my interest...

 

Yes, here's the vid. It's not in English but you can see the steps he has taken to get there.

 

Brilliant!!! Thanks!