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I may regret this. But let's hear it. 3/8 chain round filed

Discussion in 'Chain Sharpening' started by Charlie1124, Dec 19, 2018.

  1. Charlie1124

    Charlie1124 ArboristSite Member

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    Alright let's hear it.. Stihl 3/8 pitch chain. Free hand filed using 7/32 round. 2nd or 3td sharpening.Light strokes using echo branded files..
     

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  2. Ryan'smilling

    Ryan'smilling Addicted to ArboristSite

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    First two pictures are too blurry. Check if there's a macro setting on your device. Also, blowing the metal filings off your cutter will make it easier to see what's going on.

    So, like I said, a little tough to read. In the third picture it looks to me like your file is too low. Looks like it cleaned out the gullet really well but never contacted the cutting edge.
     
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  3. Charlie1124

    Charlie1124 ArboristSite Member

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    Thanks. I wandered that myself after I looked at the pictures.i try to keep 15-20 percent of file above. But it's tricky lol
     
  4. Charlie1124

    Charlie1124 ArboristSite Member

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    Iv been reading about a goofy file? Being used on round ground chains. And speeding up the cut times.. any thoughts on that? Would I use goofy file same as round? 35 degree angle. Etc etc?
     
  5. huskihl

    huskihl Addicted to ArboristSite

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    A goofy file is more geared toward a hybrid of square filing.

    As mentioned, your file is a little low.
     
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  6. Charlie1124

    Charlie1124 ArboristSite Member

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    Opinions on hitting the top plate with 1/4 round file.. now that I got a good gullet? Just to razor edge the top cutter angle? Yes. Iv been reading about race chains.. I'm not looking to race.. but do like the performance aspect of it..
     
  7. huskihl

    huskihl Addicted to ArboristSite

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    It'll work, but you'll get better hook with 7/32. You can't hold the file down to the straps and still hit the top plate. With 20% of the file above the cutter, you'll still have .050" or so of gullet under the file that should be removed every 3rd or 4th sharpening

    These aren't mine, but a pretty good reference

    IMG_1358.jpg IMG_2152.jpg
     
  8. Ryan'smilling

    Ryan'smilling Addicted to ArboristSite

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    For now stick to one file size, and nothing square or goofy. After five years you can advance from there. :)
     
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  9. Charlie1124

    Charlie1124 ArboristSite Member

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    Agreed after seeing them photos. Guess I gotta play with file height and find what works best.
     
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  10. buzz sawyer

    buzz sawyer Addicted to ArboristSite

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    You can lift slightly on the 7/32 file to cut higher on the cutter and include the top plate. Make sure the chain is tight and take your time. It will take some practice. The lower gullet looks fine, in fact I hit the lower area first to make sure the file doesn't bind as you file the top.

    Huskihl, that's a good looking file job!
     
  11. Andrew9802

    Andrew9802 Stihl441

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    Using a 3 in 1 takes the guess work out and does just as good of a job. I’ve been happy with mine and have three now.


    Sent from my iPhone using Tapatalk
     
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  12. CR888

    CR888 Addicted to ArboristSite

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    That chain won't cut any different to before you took a file too it. TIP: keep an old toothbrush handy to clean off the filings when taking pics. Your file is way too low to the point you are not really sharpening anything other than the lower inner side plate. Raise the file & concentrate on cutting the inner top plate & leading edge. You can go back and fine tune gullets when the cutter is sharp. Forget a goofy file at this stage, the basics must be mastered first. Your main problem is file position/height. A larger file is the wrong answer, it will probably work but is not the correct way to fix your issue. If light reflects from the top plate edge, its NOT sharp. Practice, ask questions, clean cutters with T/brush before taking pics & we'll all be here to help get your chains cutting well. Your intuition to get a 2nd opinion was spot on. Your eyes are the best tool for filing.
     
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  13. Philbert

    Philbert Chainsaw Enthusiast

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    That's what file guides are for.

    Philbert
     
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  14. Huskybill

    Huskybill Addicted to ArboristSite

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    After the gullet is hogged out for chip clearance I then use the file n guide to put a different angle on the top edge. 3/8” chain 7/32” file on both. 404” chain 1/4” file for the gullet, 7/32” file for the top edge.
     

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