I have my break mounted permanently and a finish nail in the bench. Pull the chain out till I can hook it on the nail marked for the number of teeth, punch the river that's lined up with the brake, ezpz
I doubt this is worth any attempt. My understanding is the tooth has a chrome coating on the outside to hold the edge while the main part of the tooth is soft enough for a file to cut. I think you'd just either make it unfileable or brittle.
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