Subject: Re: [harryproa] Re: PLOYSTYRENE AS A CORE MATERIAL?
From: "Rob Denney" <>
Date: 6/12/2006, 11:32 PM

Sorry, I missed this.  Doug, please send any questions to me as well as to the group as I am having continual problems with Yahoo.  Ta.
Polystyrene will not work on areas where you are walking on it, as it dents, then leaves a void under the glass.  Eventually it all falls off.  You can put 1-3mm ply each side but it is better to use a decent core.  Foam, polypropylene (Boatcote or Polycore Aus) or paper honeycomb (ATL) are recommended.   
----- Original Message -----
From: Robert
Sent: Tuesday, June 13, 2006 10:31 AM
Subject: [harryproa] Re: PLOYSTYRENE AS A CORE MATERIAL?

For long term use I'd stick with a quality foam or honeycomb. The
resin , glass and exposure to nasty materials is still the same price
for a core that can out gass and generally not perform as well. For a
discourse on this there is something on the proafile yahoo group I was
wondering for the marginal extra cost of going to 20mm for the core in
polycore polypropylene honeycomb,
Robert --- In, "doha720" <doha720@y...>
> Could it be used to make the flat platform on the camper?
> 15mm expensive foam sandwiched with 400db is stated on the plan.
> Was buying the polystyrene for the end caps today and thought...
> Doug

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