Re: toroid

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: "Lau, Gary" <gary.lau-at-hp-dot-com>
 >
 > No adverse effect, but it's clear you haven't tried it.  If the duct
 > were a straight cylinder, it may make it smoother, but as a torus
 > curved, the foil will not lie straight, and it will be a mess.  Using
 > relatively narrow, individual strips of aluminum tape (HVAC aisle of
 > Home Depot) is the best bet, although I know of no way to make the
 > surface free of corrugation ridges.  Covering the duct with paper strips
 > soaked in water & Elmer's glue prior to aluminum tape is the best method
 > I've tried, but still not perfect.
 >
 > Gary Lau
 > MA, USA
 >
 > Original poster: Jimbo07031982-at-aol-dot-com
 >
 > Would using multiple layer's of tin foil warp around aluminum ducting in
 >
 > order to get it ultra smooth have an averse effect on it?

	I've had good luck wrapping the ducting in masking tape first is easy
and quick and works quite well.  Several layers, working in opposite
directions so laps smooth over themselves.

Ed