Relevant

CHAIN SHARPENING

A chainsaw should be sharp enough that when making a downwards crosscut, the saws own weight is all that’s required to get through the log.

See-sawing the bar in the cut should not be necessary. Listed below are the most important points that will ensure efficient cutting

1. The file must be exactly the right depth in the tooth to produce the right angle of sharpness under the top of the tooth. The only accurate way to achieve this is by using a quality file holder. With the file locked in the file holder, the file will be exactly the right position in the tooth.
2. The depth gauges must be the correct height. Generally from .6 mm to .8 mm below the cutter height.
3. The filing angle of the teeth must be equally opposite for left and right cutters. The ideal angle for most Australian timbers is 30º (off straight across).
4. The length of the teeth must be the same.
5. The guide bar must be in good condition as mentioned earlier. No burr on the edges.
6. The rails that the chain runs on must be equal in height and not worn too low, not be chipped or flared.