Oregon square ground chain [This is the full skip version] – square ground chain is the highest performing chain there is with very fast cutting and good stay sharp properties. 15% to 20% faster than standard full chisel. Almost impossible to source in the UK – we try and stock it but it is expensive to get in and can run out of stock for a few months at a time.
The disadvantage is that it is very hard to sharpen correctly – a very different technique is used with a special (and expensive) type of file click here to find.
Using the Granberg clamp on file guide is essential for getting this type of chain sharpened right as then you can set and duplicate the complex angles. There is an excellent guide on how to do this here. If you are serious about square ground chain you need to read it.
‘A skip chain has fewer cutting teeth than a conventional chain which means it won’t be dragging as many teeth through the wood you’re cutting. Less drag on the chain means less power is needed to cut through the log. That means the motor on your saw runs faster which keeps it in a more efficient power curve. It’s the same principle you use when downshifting a transmission in your truck to go up a steep grade. You get more power by increasing the engine speed. ‘ Steven Gregersen USA