1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
    Caluwe - Passion for Fire and Water ( Pellet and Wood Hydronic and Space Heating)

Chain grinding angles

Post in 'The Gear' started by Joful, Nov 6, 2012.

  1. Joful

    Joful Minister of Fire

    Joined:
    Mar 7, 2012
    Messages:
    5,937
    Loc:
    Philadelphia
    Using a bench mounted chain grinder, I've always done my best to follow the grind angles for any given chain, but it's always been a challenge. Both Oregon and Stihl have conflicting information out there, particularly when it comes to the vise angle (0 vs. 10 degrees) on some of their most popular chains.

    It seems a lot of folks sharpen their 33RS and 33RSC's to 60/30/10 degrees, and I'm wondering if maybe I'd just be better off sharpening all of my 3/8" x 0.050" chains to that set of angles, regardless of brand or profile. Thoughts?

    Helpful Sponsor Ads!





  2. MasterMech

    MasterMech Guest

    I usually stick to the OEM spec'd angles for the chain. But I've been hand-filing for the last few years so vise angle is a crap-shoot really. ;)
  3. nate379

    nate379 Guest

    Vise angle is 30* for the chain I run. Stihl RS32 I think.
  4. Joful

    Joful Minister of Fire

    Joined:
    Mar 7, 2012
    Messages:
    5,937
    Loc:
    Philadelphia
    You're talking top plate angle, which i also keep at 30, not vise angle. I've never seen a vise that tilts beyond 15 degrees.

    That said, I've seen literature putting Stihl 33RS at both 25 and 30 degrees. I use 30.
  5. nate379

    nate379 Guest

    My grinder doesn't adjust like that, the vise just spins to around 40* side to side.
  6. nate379

    nate379 Guest

  7. MasterMech

    MasterMech Guest

    What grinder do you have Nate?
  8. MasterMech

    MasterMech Guest

  9. thewoodlands

    thewoodlands Minister of Fire

    Joined:
    Aug 25, 2009
    Messages:
    10,825
    http://www.oregonproducts.com/pdfs/GrindingAngles.pdf
    For my chains I use for bucking, A = 30, B=0, C=60.

    Zap
  10. nate379

    nate379 Guest

  11. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,969
    Loc:
    Anderson, Indiana
    I set all 3/8 chain to 60/30/0.....Little rooster tail action in a red oak! (Thats a safty cain to);)



    10517_103445316332150_100000000464379_94970_6245138_n.jpg
    Joful likes this.
  12. Joful

    Joful Minister of Fire

    Joined:
    Mar 7, 2012
    Messages:
    5,937
    Loc:
    Philadelphia
    Nate's grinder aside, what's the accepted grind for the 33RSC-3? I've seen published top plate angles of both 25 and 30, and vise angles of both 0 and 10 degrees.

    My thinking, since I like these 33RSC-3's so much, was just grind everything to that spec. Not that an Oregon chain ground to the 33RSC-3 spec will perform the same, but just that I'll eventually work my way thru them and replace all with 33RSC-3's.
    smokinj likes this.
  13. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,969
    Loc:
    Anderson, Indiana

    I threw out the charts long ago. Micro chains I do 60/20/0-milling chains 60/10/0 everthing else 60/30/0...I can even show you a video of noddles off a shag bark hickory milling! :eek:
    Joful likes this.
  14. Joful

    Joful Minister of Fire

    Joined:
    Mar 7, 2012
    Messages:
    5,937
    Loc:
    Philadelphia
    Cool. If that works for you, smokinj, I'm inclined to do the same. Big question... what are the pros/cons of the 10 degree vise angle vs. straight up? It seems even the manufacturers keep going back and forth on that.

    Thanks!
  15. thewoodlands

    thewoodlands Minister of Fire

    Joined:
    Aug 25, 2009
    Messages:
    10,825
    It gives you a knife like edge.

    zap
  16. thewoodlands

    thewoodlands Minister of Fire

    Joined:
    Aug 25, 2009
    Messages:
    10,825
    I had saved this, it's from Oregon regarding the same question, I only use it for my milling chains.

    The engineers suggest you do include the 10 degree tilt angle on your chain, this angle puts a “knife” edge on the cutter which helps with out of box sharpness and also to get rid of the debris that gathers in the cutter

    zap
  17. smokinj

    smokinj Minister of Fire

    Joined:
    Aug 11, 2008
    Messages:
    15,969
    Loc:
    Anderson, Indiana
    I cant tell any diffrance and kinda makes me think why in the heck to they go back and forth on this. If I can throw noodles in a shagbark hickory that set for a year I am good with it.

    Watch the last couple seconds that wood was like a rock.

  18. amateur cutter

    amateur cutter Minister of Fire

    Joined:
    Aug 20, 2010
    Messages:
    1,170
    Loc:
    West Michigan
    60/30/0 here as well. 25 on the top plate angle on 3/8 picco or lo pro chain. A C
    smokinj likes this.
  19. Highbeam

    Highbeam Minister of Fire

    Joined:
    Dec 28, 2006
    Messages:
    8,800
    Loc:
    base of Mt. Rainier on the wet side, WA
    Stihl 33RSC or RSF all get 30 degree top plate angle. Nothing else is adjustable on my grinder except for depth of cut so that I don't cut the straps.
    smokinj likes this.

Share This Page