PVC preping (was Form Material Info!!!)

["Lau, Gary" <Gary.Lau-at-compaq-dot-com> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

The "standard" PVC secondary former preping procedure of drying and
polyurethane coating is usually done simply because is doesn't cost a great
deal of time or money to do so, there is no harm is doing so, and there is
that possibility that it _might_ be helpful.  I did it to mine as well.  But
to my knowledge, it has never been demonstrated that performance or
longevity are at all affected by this.  

Using exotic or more expensive materials for secondary formers is another
matter however.  I would not recommend the use of less lossy materials
unless their cost is not significantly greater than common PVC.

Gary Lau
Waltham, MA USA

		-----Original Message-----
		From:	Tesla list [mailto:tesla-at-pupman-dot-com]
		Sent:	Saturday, July 15, 2000 12:42 PM
		To:	tesla-at-pupman-dot-com
		Subject:	RE: Form Material Info!!!

		Original poster: "Dan Kunkel" <dankunkel-at-hotmail-dot-com> 

		Gary,

		why then do so many coilers "prep" their pvc forms by drying
them with an 
		oven and coating them with poly? is this considered an
outdated procedure? 
		are you saying all secondary form materials are the same in
terms of 
		performance?

		dan
	
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