What size file to use for Oregon chain?

I have two Oregon chains. One says 72 on the bottom, the other says 73. What size round file should I use to sharpen these? Thanks.

Update:

also, what angle should I file it at? thanks!

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  • 1 decade ago
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    I bet It's a 7/32" round file that you'll need. That's what's in my chain hand sharpener.

    My chain is an Oregon 70.

    I bet there is no real difference in the cutters between yours and my chain.

  • 1 decade ago

    Three basic sizes 3/8ths,7/32nds,5/16ths lay the file in the tooth should fit concave top to bottom of chain.I at times have sharpened my saws with a flat file,you want the top of the tooth to be sharp,not the side.

    Source(s): Logger for years
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