Since square-ground chain is not very common, most chain saw operators will never have an occasion to perform filing with a square file. Square-ground chain is only used in conjunction with longer guide bars designed to cut larger trees. However, the performance advantages of cutting timber with square-ground chain can outweigh the fact the square-ground filing can be more difficult and affords less room for error. Replacement 16" saw Chain fits WEN 40417 40V Max Lithium Ion 16-Inch Brushless Chainsaw also fits WEN 4017 16-Inch Electric Chainsaw One Brand new loop of AdvanceCut Oregon chainsaw chain (made in the USA) for Wen chainsaw replaces old-style OEM 91PJ056X factory chain Built-in Lubri-Tec automatic oiling system extends the life of your chain by delivering oil to key parts of the chain so you can work smarter with less downtime and maintenance The first square-ground chain you sharpen should be a square-ground chisel chain that still has its factory grind. Do not use an old chain – especially one that has been previously filed. A chain that has already been resharpened may still have gullet material attached that needs to be removed.

Tough, long-lasting chrome outer layer and hardened rivets help reduce wear and allow for fewer chain adjustments While square-ground filing can be done out in the field, a shop with a light and a work bench is an ideal learning space. It’s easiest to file in a setting where your cutters are stable and there’s lots of light. Tip: A second, new square-ground chisel chain on hand can be a handy reference point for square-ground chain sharpening. You can look at the cutter teeth on the second chain to see what the cutter teeth should look like.