Arthur, I'm no expert either.
If you stick to the factory specced angles initially, it will get you a fair way there.
Remember too that each manufacturer has there own specs for a given chain, ie. they vary in angles and heights.
FWIW even loggers are supposed to stick to factory angles and depth gauge heights these days. (OH&S strikes again)
A mate did his Certificate whatever for advanced felling a few months back and got into trouble from one of the instructors as his rakers were too low.
He had to buy some standard chains to continue.
The best online sources of factory info.
I've uploaded the Carlton book below (it's no longer available online since Blount bought them out, dial up warning, it's 1.6Mb) and the Oregon manual from last year, so it should still be current (and that files even bigger)
Stihl's info isn't quite as complete and i have some Windsor stuff if anyone is interested as there's still some Windsor chain around.
OK, my take on what works for me.
Use a file guide (or grinder) and check that the angles you've set on your grinder are repeating exactly side to side, many don't.
The same goes for filing.
Plenty of blokes are good on one side, but can't get the angles right the other way, even when using a guide.
Check it, it makes a difference.
I really like the Vallorbe file guide if you prefer the clip on type.
Oregon and Stihl's clip on the file type guides hold the file too high IMO resulting in not enough hook on the tooth.
Too little hook restricts the tooth self feeding into the timber, slowing the cutting and needing too much pressure on the bar.
This isn't right, there should be no downward pressure required.
When the angles are right and the chain sharp the chain self feeds into the timber.
My absolute favourite file guide is The Husqvarna roller combi guide.
It works fine on Husky, Oregon (same thing) Carlton and Windsor chains and I've used it on Stihl chain too, even though it isn't designed for it.
It's quick and accurate and I like the raker guide that is built into it.
Carlton's little File-O-Plate is a great idea for cutter and raker heights but hard on files (it's hardened steel) and I prefer the slightly more aggressive raker height and the little more hook I get with the Husky guide for my saws (which are a little on the grunty side)
A less powerful saw (most consume saws) might prefer the FOP heights.
Dry hard timbers require a semi-chisel or chipper chain unless you have some nice old clean Red Gum (only Carlton make chipper chain these days, and FWIW Carlton are owned by Blount, who also own Oregon and the late, lamented Windsor Saw Chain Co)
It'll outlast full chisel chain easily, and after a few cuts will be just as fast.
There's a really good description of the different chain types and how saw chain actually works in the Carlton PDF below.
Use factory raker heights. (unless you really know what you are doing)
Dropping the rakers makes the chain grabby and severely increases the risk of kick back.
It doesn't always increase speed either.
Apparently you can pick the difference in the way the wood fibre looks when the rakers are too aggressive, but I'm not good enough/experienced enough to do that.
Soft timbers like pine can be filed a little more aggressively with a little more hook and slightly lower rakers, although if you are cutting Cyprus I'd probably stick with what works on Eucs.
Clean, green timber you can use full chisel chain and have fun.
True ripping is a different kettle of fish all together and I've done bugger all.
IIRC the top plate angle is around 10-15*, but other than that, I have no idea.
If you want to reduce kick back, use chain with bumper links, folded rakers (Oregon's Vanguard chain) etc.
It doesn't cut as fast as non safety chain, or at least you have to work more on the chain to get it to cut quickly but I'd suggest most casual users should use it.
Kick back and push back can be nasty, or worse.
That's all pretty general, the angles and heights I use on my chains are a little tweaked from stock, eg. I usually use 30* with my Carlton semi-chisel and a specific cutting angle/raker height but it may not be appropriate on a smaller saw.
Hope that helps some.
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