I think you've misunderstood me Burvol and apologies if I've come across as a know all. You seemed a bit "touchy" there
Are you saying that square ground chain will outlast semi chisel? Outcut yes but not outlast.
Of all the things you think I need to learn they're all pretty basic and sarcastic (sarcasm is funny!). I'm not sure if you can comprehend the conditions that we sometimes have to cut in out here. I've seen sparks coming out with some of the timber I've been cutting and its not from digging the bar tip into the dirt, or hitting rocks etc etc. Its just plain old dirty, Aussie hardwood. I'm not out cutting much green timber, I'm cutting hardwood logs/trees that may have been laying there for over a hundred years through countless dust storms, have dirt/termites up the centre etc etc. Our annual rainfall is about 10-11" so its pretty dry and dusty here. My comment on square was simply stating that square ground chain has a place, and its not in the conditions I cut in and I'm sure you could understand that. I rarely field sharpen and just swap the chain and grind it when time allows. I normally carry around 20 chains or more, depending on what type of day it will be and the size of the wood.
Other guys in Australia would back me up on this without me knowing it all. We're not all idiots here - if square ground chain was the best for Australian conditions we'd all be using it. I can assure you that all the loggers I've heard of out here don't use square, and thats straight from other dealers that supply them their chain.
I'm also sure that you're right regarding grinders bluing the cutters although we don't all have a microscope to see it. If somebody has commented on bluing cutters on a grinder then its been BAD, which is what I was getting at. I also don't have hours every night to meticulously hand file every tooth to within a micron of preffered specs.
I'm on the skip bandwagon but only on longer bars. I don't use it on bars under 25" (and I've never mentioned that I have). Even my 3120 won't pull a 36" non skip chain easily through most of the wood I've been cutting (dead hardwood). Or were you meant to say the semi chisel bandwagon, not skip?
P.S. I've just had a look at a few cutters off a grinder with a 10x hand lens - I've got with no evidence of bluing. "any heat" off a grinding wheel does not change the composition of metal. Of course heat is produced when small pieces of steel are "torn" from a cutter tooth - same goes for filing. A cheap grinder I once had spun at 7200rpm and it was a complete pig for bluing up cutters. The MAXX like I have (and other pro grinders) spin around 2850rpm and are a lot more user friendly.
P.P.S. The comment at the bottom of my obviously offensive post regarding filing was NOT aimed at you but I stand by it 100%. By the sound of it you're not in that 90% - congrats!