Bunch of random pics of cutters

[Squish9]

23RM (3693) is yellow, but 23RM3 (3695) is green. 23RS3 (3694) is green too.
Of course, you probably have your reasons that you need these 2 types, but the classification is conventional.
If you use a chainsaw with enough power, any chain becomes "yellow".
Nowadays, the tests are done on a test bench powered by an electric motor, but here is the data of a gas/petrol chainsaw that was used for the evaluation of .325 chains.


View attachment 450402

I was hoping to demonstrate them doing the same work because I think people have the wrong idea about them, problem is I can't get any of the Stihl bumper link chains here in 325 or 3/8.

Guess I'll leave and move on. At least I learnt something, the cutters are different between LPX and LGX

 

[Hfernandez]

Hello, I'm looking for constructive criticism if this is acceptable for a square grind. I'm converting this chain from a circle grind. I think I'm finally starting to figure out how to square grind by hand, but I want to make sure I'm not just mistaken.

Pferd 5/32 file and Pferd double bevel file used.

Sorry if the photos are blurry, the phone overcorrects, leaving too much reflection or not enough.

Thank you for the response in advance.

 

[pbillyi69]

from what i can see in the picture that will cut good. as long as the side cutter and top plate meet at the point on the inside it will cut. the thinner the top plate is will make it cut fast and dull quick. if you make it thicker or mor blunted like a chizel it will be stronger while cutting well and wont dull as fast. the top plate angle will also contribute to how fast it will cut and how smooth it cuts. the more squared it is the smoother it will cut but it will slow it down slightly the more pointed it is will make it cut faster if the saw has enough power but it will chatter more. the kind of wood you are cutting makes a difference too. i personally like my chains more squared off so they cut smoother. i also just go for a chain that will cut hard wood well. if a chain will cut hard wood well it will blast through soft wood really well

 

[Hfernandez]

Hello again, this is not my original photo, but is from a reputable porter. By chance, when first trying to learn how to square file, I took a true Pferd triangle file, not the hexagonal three sided Pferd file, and ended up with this tooth. There is no top tooth, like circle or square grinds I've seen, but it looks pretty good for cutting. The porter says it cuts well, and calls it a square grind. Is it accurate to consider this as a type of square grind?

The reason I ask, is that is super easy to achieve, just using that large triangle file at a slightly dow ward angle, similar to the 45/45/45 tilt, except you only keep it

from what i can see in the picture that will cut good. as long as the side cutter and top plate meet at the point on the inside it will cut. the thinner the top plate is will make it cut fast and dull quick. if you make it thicker or mor blunted like a chizel it will be stronger while cutting well and wont dull as fast. the top plate angle will also contribute to how fast it will cut and how smooth it cuts. the more squared it is the smoother it will cut but it will slow it down slightly the more pointed it is will make it cut faster if the saw has enough power but it will chatter more. the kind of wood you are cutting makes a difference too. i personally like my chains more squared off so they cut smoother. i also just go for a chain that will cut hard wood well. if a chain will cut hard wood well it will blast through soft wood really well

Thank you. This is good information for me to know. I think I will work to have a less aggressive angle, and be okay with slightly slower cutting.

 

[Squareground3691]

Hello again, this is not my original photo, but is from a reputable porter. By chance, when first trying to learn how to square file, I took a true Pferd triangle file, not the hexagonal three sided Pferd file, and ended up with this tooth. There is no top tooth, like circle or square grinds I've seen, but it looks pretty good for cutting. The porter says it cuts well, and calls it a square grind. Is it accurate to consider this as a type of square grind?

The reason I ask, is that is super easy to achieve, just using that large triangle file at a slightly dow ward angle, similar to the 45/45/45 tilt, except you only keep it
View attachment 451171

Thank you. This is good information for me to know. I think I will work to have a less aggressive angle, and be okay with slightly slower cutting.

Yup that’s a square grind , done on a square grinder,

 

[Hfernandez]

Yup that’s a square grind , done on a square grinder,

Thank you, I actually didn't mean to post this question, as you can see it got cut off. Nonetheless, good to know for the future.