I do everything by hand with either a guided file (clamp on guide on the bar) or hand filing with the height guide that clips to the back of the file. I've given up taking the chains in to be ground, too many chains ballsd up and destroyed by wrong angles or taking too much off one side and ending up with a chain that cuts around corners. I tried square filing but didnt really see any advantage over vanilla grinding for the extra hassle and also the square ground seemed to be a bit more prone to denting or being damaged.
I've pretty much settled on micro chisel for firewood duties and keeping the full chisel for felling. I have a couple of tungsten carbide tipped chains, one Maya and one Stihl but they are painfully slow for cut rate. Apart from that keeping the angles on the leading edge (either 25deg or 30 depending on what was there to start with), aboutt 10deg on the top angle, the tooth length the same, and depth gauge to 25thou and thats about as good as I need and can get.
I tried one of those nifty Stihl do everything in one pass multi files, but I dont rate them as its a pain turning the files to keep the edges fresh.




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