If you used polyester resin, you would have to use polyurethane foam (like a 
surfboard), since the resin would dissolve normal
styrofoam.  I think it would be kinda heavy, though.

SailplaneBoy wrote:

>     Do you refer to Polyester Resin, or Polyurethane resin?  I can't say
> I've heard of Polyurethane.
>
> ----- Original Message -----
> From: "Rodger Hamer" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, January 09, 2001 7:39 AM
> Subject: Re: [RCSE] Glassing Cores
>
> > Has anybody glassed cores using polyurethane instead of epoxy? If so, what
> > weight glass? How were the results? Could it be done without bagging?
> >
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