Chain just wont cut

[muddstopper]

I was given a almost new chain from a friend that just cant be made to cut. I have sharpened it just like every chain I use and cant figure it out. Chain is on a 365 with 24in bar. It seems like it just wont take a bite out of the wood. I have cut the rakers down to almost nothing, full chisel, 55*x30*x10* on all the teeth, looks razor sharp, exactly like every chain I sharpen. I like to have to hold back on a saw while it pulls thru the wood, this one just wont pull and I have to bear down on it to get it to cut. Any ideals? I hate to throw away what looks like a perfectly good chain, but something just aint right with this one.

 

[Erik B]

Hope it isn't put on backwards

 

[farmer steve]

Hope it isn't put on backwards

that only happens in WI.

 

[muddstopper]

Resembles something I have done before, but not this time.

 

[Erik B]

that only happens in WI.

I have read on these sites guys admitting to doing just that. Must be the older guys having a senior moment

 

[farmer steve]

I have read on these sites guys admitting to doing just that. Must be the older guys having a senior moment

hey i resemble that remark.

 

[Red Elm]

Look at the trailing edge of the top plate, the very rear, the tooth "heel". If it is beveled off, the chain won't cut. The heel is important for the porpoising of the tooth. If the tooth can't porpoise, it won't cut. It doesn't take much beveling to mess this up.

 

[Sandhill Crane]

Not sure I follow what you mean. Your talking about the thickness of the tooth being vertically square to the top of the tooth?

 

[muddstopper]

Not sure I am following you about the heel. I consider the heel to be the back edge and I dont see how one could mess that part up. I dont file or grind back there. Your mention of the tooth porpoising does make me stop and think about a possible problem. The chain doesnt seem like it getting enough oil, altho I dont have that problem with other chains on the same saw. The chain was a little rusty, just surface rust, could it be there is enough rust to prevent the chain from flexing. I'll have to check it out tomorrow to see just how flexible the chain is. I assumed, and maybe wrongly so, that a few turns on the bar and the chain would have what little rust on it knocked off.

 

[Philbert]

Photos help.

Philbert

 

[muddstopper]

video describing chain features,
Yea I know, Have to wait until tomorrow for pics

 

[Red Elm]

I don't know if you can see it or not, but the very back of the top plate is beveled off, like right behind where the witness mark would be. This was a brand new chain that hit a large smooth rock, it happens. I sharpened it like usual, nothing. I got the dial caliper out and took another .020" off and evened all the teeth. Took the depth gauges down, nothing. Cleaned it really well and got to looking VERY closely and discovered the back of top plate damaged. Started researching and found the answer in Carlton chain download. This chain WILL NOT CUT with that damage. Crazy.

 

[Red Elm]

The big rock was up under the far side right where the chain exited the kerf, I wonder if it porpoised on the rock. The front tooth damage was not good, had to take off .030" total to clean them up. Back damage is not very noticeable, but is there.

 

[Philbert]

That's interesting, but confusing.

Some chains come 'clipped' by the manufacturer. The front edge (top plate) will still dig in. The depth gauge will still tip up. It should still 'bite'.

Would love to learn more, and understand how it affects cutting.

Philbert

 

[Red Elm]

Yeah, I hear ya. I'm guessing from what I read there is no "edge" to bump and cause the cutting edge to dig back in. It is dangdest thing I ever saw. That chain is hand sharpened and will draw blood right now. Depth gauges down .025". Will NOT cut.

 

[Full Chisel]

Have you ruled out the bar being the issue?

 

[backhoelover]

video describing chain features,
Yea I know, Have to wait until tomorrow for pics

i think im i love. wonder if shes married

 

[Stihlbillie]

^what he said.




-chimpboy

 

[backhoelover]

i called it first find you own lol

 

[Stihlbillie]

You know shes got a sister. Lol




-chimpboy