ROUND Grinders only

[jake wells]

this is what i use to repair messed up chains but prefer hand filed.

 

[Cut4fun]

My USG I think I am set up for A 40, B 10, C 30

 

[junkman]

I am at 40-20-20- right now when i have time to test out round .

 

[Firewood Bandit]

Working on converting a cheap Tecomec to Silvey style vice. Just preliminary but getting closer.

 

[Philbert]

Does anybody have a diagram explaining the angles? 53/30/10

Chain cutters actually have very few 90° angles on them, and it is easy to get confused really quickly. So numbers like '30°/60°/0°' are really settings for an Oregon style grinder, and may actually vary from the measured angles on a tooth. *Note that these number do not apply to a STIHL USG or HOG grinder - they measure their angles differently*.

In the attached file they are actually expressed as A/C/B (or '30°/0°/60°' for the 'standard' example above).
30° is the basic/standard/default angle for the chain vise rotation ('A' in chart below).
60° is the basic/standard/default angle for the grinder head tilt ('C' in chart below).
0° is the basic/standard/default angle for the chain vise tilt - corresponds to 'down angle' when filing ('B' in chart below).

https://www.oregonproducts.com/pdfs/GrindingAngles.pdf

Of course, since you are sharpening the chains, you get to choose any angles you want. Start with the default or recommended angles if not sure, and experiment if you want to see if changes make a difference in the cutting that you do.


Hope this helps!

Philbert

 

[Gary Courtney]

Chain cutters actually have very few 90° angles on them, and it is easy to get confused really quickly. So numbers like '30°/60°/0°' are really settings for an Oregon style grinder, and may actually vary from the measured angles on a tooth. *Note that these number do not apply to a STIHL USG or HOG grinder - they measure their angles differently*.

In the attached file they are actually expressed as A/C/B (or '30°/0°/60°' for the 'standard' example above).
30° is the basic/standard/default angle for the chain vise rotation ('A' in chart below).
60° is the basic/standard/default angle for the grinder head tilt ('C' in chart below).
0° is the basic/standard/default angle for the chain vise tilt - corresponds to 'down angle' when filing ('B' in chart below).

https://www.oregonproducts.com/pdfs/GrindingAngles.pdf

Of course, since you are sharpening the chains, you get to choose any angles you want. Start with the default or recommended angles if not sure, and experiment if you want to see if changes make a difference in the cutting that you do.


Hope this helps!

Philbert

just got a 511ax need help understanding down angle 10 marks! do these marks go on your vise rotate numbers?

 

[Philbert]

Should be small hash marks on the side of the vise: 10 degrees Left, 0 degrees, 10 degrees Right.

There are also small marks on both the vise rotation scale, and the grinder head tilt scale, that show compensation recommended when grinding with head tilt (if you are fussy).

This should be shown in your grinder's manual. I am on my phone right now so cannot post those photos.

https://www.oregonproducts.com/pdfs/511AX_English_Rev5.pdf

Illustrations 23-28

Philbert

 

[Gary Courtney]

Should be small hash marks on the side of the vise: 10 degrees Left, 0 degrees, 10 degrees Right.

There are also small marks on both the vise rotation scale, and the grinder head tilt scale, that show compensation recommended when grinding with head tilt (if you are fussy).

This should be shown in your grinder's manual. I am on my phone right now so cannot post those photos.

https://www.oregonproducts.com/pdfs/511AX_English_Rev5.pdf

Illustrations 23-28

Philbert

the left and right down angle marks can be put on lets say 30* or 25* if this is the angle you choose?

 

[Gary Courtney]

10 degrees Left, 0 degrees, 10 degrees Right.

each side is for compensation?

 

[Philbert]

the left and right down angle marks can be put on lets say 30* or 25* if this is the angle you choose?

Correct.

Vice rotation (top plate angle) - say 30 degrees; Grinder head tilt - say 60 degrees; and Down Angle - say 10 degrees; are separate adjustments, but they work together to create the final cutter shape.

each side is for compensation?

The compensation is for the vice rotation angle and the grinder head tilt angle, due to the compound angles created by the right and left down angles. Many people would ignore these.

Philbert

 

[KenJax Tree]

Just picked this up today. Only thing I'm not liking is the vice.

Joe what grinder is that? 511ax?

 

[Red97]

Joe what grinder is that? 511ax?

Oregon 410.

Seems to be a nice unit

 

[KenJax Tree]

I wonder what the difference between the 410 and 510a is besides $40.

 

[srcarr52]

Working on converting a cheap Tecomec to Silvey style vice. Just preliminary but getting closer.

FYI. On the silvey setup the spring steel outer piece has a larger hole so roll pin has clearance to allow the paw to ride up over the tooth and drop into place behind it. The outer spring steel piece is only used to keep the other paw out of the way.

 

[Philbert]

I wonder what the difference between the 410 and 510a is besides $40.

Oregon revamped their grinder line about a year ago. A few changes are cosmetic. Some are significant changes to the chain vise, grinder body, power, etc.

http://www.oregonproducts.com/pro/products/accessories/accessories_main.htm

Philbert

 

[KenJax Tree]

The 410 is probably fine for me. I just hate sharpening chains everyday anymore. Im not as particular as i once was so as long as its sharp i'll be happy.

How are the Laser branded Oregon knock-0ffs for $110?

 

[Philbert]

The 410 is probably fine for me.

Big differences between models, in terms of power, etc. Worth taking a look at them before you decide.

Philbert

 

[bikemike]

Thank you guys.

I can file enough to get me through the day cutting. But I only cut a few months a year. Less than 10 cord mostly.

Sharp to me is out of the box stihl RS. Can you get those kind of results from a good grind?

Stock out of a box is ok in my opinion. I like em more after they get there first touch up or sharpen

 

[KenJax Tree]

I file my chains right outta the box and knock the rakers down a hair.

 

[Red97]

The 410 is probably fine for me. I just hate sharpening chains everyday anymore. Im not as particular as i once was so as long as its sharp i'll be happy.

How are the Laser branded Oregon knock-0ffs for $110?

The 410 I have seems to work really well, I got it as a gift. My only gripe is the chain vice, just don't care for the cam lock style.

I am really liking the results I'm getting. Still need to play with the angles a bit.

I have aquired enough loops, where I haven't needed to file a chain since I got the grinder. Just bring a few loops when I go cut.

It appears the 511ax has a clamp style vice. But the vice kit is like $130 + to retro fit the 410.