Chain sharpening

[barbender]

 I got mine from a company in Minnesota, the name of which escapes me at the moment.

[WLzM1A]

Yes you have to take a very light touch with a chain grinder. I don't remember what model I have, it is a Tecomec with the hydraulic clamp. I put a CBN wheel on it, but even with that you have to take a very light grind. It's not a problem with the grinder, but the nature of sawchain IMO. If you grind hard at all, the teeth want to curl and form a bur, which does nut cut well.

 I think the reason a lot of people have a low opinion of chain grinders is that they are grinding too hard and not getting good results. My ground chains cut right with my hand filed ones.

 I don't mean to suggest that everyone is being heavy handed with their grinders, either. On the contrary, you almost have to be ridiculously light handed. I set mine so it is just BARELY touching the teeth, and as I start advancing sometimes I'm not even touching some due to the initial adjustment. So I'll adjust it slightly heavier to grind those teeth and make a complete revolution. As someone else mentioned, tap, tap, tap.

  I've also noticed, at least on my firewood processor, the the ground chains have a far more durable edge. I think that is due to the shape of the edge it leaves. All I know is, once the ground edge dulls, I'll file it a couple of times and then get sick of how quickly they go dull and swap out for a fresh ground chain.

 

What you said.....and its a Super Jolly

[kelLOGg]

On this thread most don't use a grinder but I like mine and don't want to switch to a manual file again. I need to replace the grinder wheel and most I see online are 1/8" thick. Mine uses 1/4".  What basis for choice for one or the other? 

[doc henderson]

Stihl has a thickness recommendation for several of their chains.  It is European and on the chart they use a comma instead of a period and is in mm.



so a .404 uses a 2.8 mm wheel, 3/8th used 2.6 and so on.  I use the same on 3/8th and .404.  I have about 3 thicknesses of wheel.

[ladylake]

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 I use a 1/8 CBN wheel on  3/8    .325  and 3/8 lp,  works great,  just get the wheel low enough so you have some hook on the side plate and keep the rakers where they should be.  I really don't thing messing around with different angles matters much. Steve

[khntr85]

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 I use a 1/8 CBN wheel on  3/8    .325  and 3/8 lp,  works great,  just get the wheel low enough so you have some hook on the side plate and keep the rakers where they should be.  I really don't thing messing around with different angles matters much. Steve

The 1/8 wheel on 3/8 chain (exspecially the first half of its life), will have a lot different profile than a bigger wheel.... Nothing wrong with it at all with it...I will use the smaller wheel or file when the chain gets to like 25-35 percent life left...

[JD Guy]

I got mine from a company in Minnesota, the name of which escapes me at the moment.

Thanks, would that be Diamond Wheel, Inc. ?

[barbender]

Yes that is it👍

[YellowHammer]

I agree, chain grinding is not that hard, there are only a few adjustments, and it's kind of a non event.  One of the reasons I switched from a CBN was that it built up crud from dirty chains, and the abrasive wheel didn't.   

[Magicman]

Someone (Gordon?) had a picture of how he welded a stump vise on to the loader on his tractor, which I also though was a great idea.

John, I have a fairly simple solution that has served me for many years:


3 foot 2X8 with holes for the the stump vice and a little thingie braised to a carriage bolt.


Ready for the chainsaw bar.  The offset on the board allows room for the chainsaw head.


With the bar secured.


The 1X4 is to raise that end up for the wing nut underneath.


When I am done sharpening, the vice goes in a zip bag and the board goes in the back of my truck. 

[trapper]

will the rubber like block  that is used for cleaning belt sanders work on a cbn wheel?