Mitchell Gass wrote:
> For some audio equipment, such as speaker and turntable stands, there
> are people who fill the insides with lead shot to dampen vibrations. The
> metal beads in your frame could have been someone's attempt - I'm
> assuming not Herse's - to dampen an unwanted vibration.
Also used in tools, e.g. "dead blow hammers" where you don't want any
rebound from the strike: http://www.bostonindustrial.com/
--
John Thompson (john@os2.dhs.org)
Appleton WI USA