hammer travel / burning angle

[KeyKat88 at aol.com]

Greetings, 

       What is meant by the burning angle for hammers. The bore angle? Maybe 
I know this concept by a different name.

Thanks
Julia
Reading, PA

In a message dated 9/19/2006 10:34:46 AM Eastern Standard Time, 
sec at overspianos.com.au writes:
both the hammer striking points and the hammer tails will be evenly spaced, 
without any hammer burning angle problems.
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