Oscar Thank you for the detailed response. this really helps make my final judgment. Just one question. Do you need 100% coverage?( excluding area near sanding )? or are you suggesting ex. 75% coverage?
> On Nov 11, 2014, at 9:16 PM, Oscar Zuniga via KRnet <krnet at list.krnet.org> > wrote: > > Adam; I used pink Owens-Corning 'Foamular' extruded polystyrene board (but > Dow Styrofoam is the same thing). I have used 2-part "five minute" epoxy to > bond the board when I want a really good bond. Spread it with a squeegee but > don't get it anywhere near an edge or anyplace that you'll be sanding, > because the hard epoxy sands much differently than the softer poly board and > you'll end up with a ridge. > > I've used hot glue when I was just mocking up something and wasn't interested > in a permanent bond. Pieces joined in this way come unglued under load and > they also fall apart over time if you don't glass over them, so this is only > a temporary way to bond polystyrene in my opinion. > > I've also used a peanut butter mix of epoxy and microballoons, spread out > moderately thin but not too thin, to permanently bond layers of polystyrene > board. The same caution applies as it does to 5-minute epoxy: don't get it > near the edges where you will be sanding it, even though micro sands a little > easier than solid epoxy. You will get ridges at the glue joints if you let > the micro mix get out to where you are sanding. > > I've also used plain Aeropoxy to bond layers of board, but it can get pretty > heavy if you use a lot of it. > > Oscar Zuniga > Medford, OR > > > _______________________________________________ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
