How to Hand File Sharpen Square Ground Chisel Chainsaw Chain

This is how to hand sharpen square ground chisel chainsaw chain. Square ground chain has advantages. A lot of people are discouraged to use it, because it can be more difficult to sharpen. This is the technique I have been using to hand file my square ground chain for many years.  I learned this from my dad, who learned it from the old time loggers and Forest Service guys he used to work with. 

Here is an Amazon link to the files I use.
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Items I Use

USA Made Smart Wool Socks
https://www.camelcitymill.com/WILSONFORESTLANDS

Wuben Head Lamps Flashlights
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TopTes Moisture Meter
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Chainsaw Files for Square Filing
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Spencer Log Tape
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RODE Wireless Go II Microphone
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RODE Lavalier Mic
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Anchorseal Original
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If you buy anything through these links, I will receive a small commission.