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Slow chainsaw milling/ pushing hard

Stonewoodiron

Stonewoodiron

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Jan 10, 2021
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188
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Churchville Maryland
Just wanted to post a recent experience which may help someone. May already be on here in some form,but, here it goes. I remember Bob L (a member) giving me chain advice earlier in my chainsaw milling adventures. He said he hand files in the field and then grinds in the shop- I now know why. I always hand filed in the field. This worked for maybe 80 or so 20”-30” slabs (all hardwood). Eventually I found myself pushing hard, really hard, to get through the cut. Checked rakers, thought it was the log, sharpened and resharpened- nothing seemed to help. Saw a milling video by “Flowering Elbow” on YouTube. Suggested that the hand filing would basically over time change your tooth angles and stall the cut. I purchased a $200 ish Oregon grinder, set the appropriate angles, and ground the chain (all teeth even). Didn’t touch rakers. Went to test on some 28” black cherry and the saw basically pulled itself through the cut. 2 days earlier I was having to put lots of weight into the same log. I can’t believe I waited so long to get a grinder. Basically, as I now see it, resetting the teeth to same and proper angles is a necessity and needs to be carried out periodically. Hope this helps someone
 
merc_man

merc_man

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Jan 10, 2010
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1,555
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ontario
Just curious, what are the angles your grinder is set at. I did mine on the grinder and it works good but was wonderingnif my angle were propper.

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blades

blades

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Nov 19, 2008
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SE WI
for milling 10deg across the top is mostly quoted, 60 down ( 30 deg cutting angle of top plate). Most MFG chain comes at 25 or 30 deg across the top. same 60 down. Stilh is mostly 25 deg across. size of wheel used on machines vs type of chain makes some différance as well. 1/8wheel on 3/8 full height gives way too much gullet depth into the tooth as an example. how you set the centerline of the wheel vs tooth also has some play in things but not all units are adjustable ( vise location ) That center line also changes as the wheel wears.
 
Stonewoodiron

Stonewoodiron

ArboristSite Operative
Joined
Jan 10, 2021
Messages
188
Location
Churchville Maryland
Just curious, what are the angles your grinder is set at. I did mine on the grinder and it works good but was wonderingnif my angle were propper.

Sent from my SM-G950W using Tapatalk
I used 30*. I’ve tried all angles from 10-35 with little to no difference seen in finish and speed. I like the fact I can change the angles easily on the grinder for experimentation.
 
Stonewoodiron

Stonewoodiron

ArboristSite Operative
Joined
Jan 10, 2021
Messages
188
Location
Churchville Maryland
I used 30*. I’ve tried all angles from 10-35 with little to no difference seen in finish and speed. I like the fact I can change the angles easily on the grinder for experimentation.
And I used the 55* on the top Didn’t bother to get the exact factory angles of the chain. Just eyed it up and had at it. No patience for that. Im not setting up to machine aircraft ball bearings!
 
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