[MHml] Infusion Adhesive

[Henny van Oortmarssen]

Thanks for this excellent article. Just one note: a standard shop vacuum for vacuum bagging is not a money saver. This use will ruin the shop vacuum as it will burn down. Maintaining a vacuum provides much to less air to cool down the shop vac.

Henny van Oortmarssen
www.fram.nl
  
  ----- Original Message ----- 
  From: kurt hughes 
  To: 'Informed discussion of multihull issues' 
  Sent: Wednesday, March 10, 2010 9:51 PM
  Subject: Re: [MHml] Infusion Adhesive


  Provided that you vary the vinylester catalyst/initiator amounts, often fractions of a percent, as a function of any temperature change.  This is old information by now but maybe forgotten.  Hence http://www.multihulldesigns.com/post_apocalyptic_boatbuilding.htm


  Kurt Hughes
    -----Original Message-----
    From: multihulls-bounces at steamradio.com [mailto:multihulls-bounces at steamradio.com]On Behalf Of Timothy Dunn
    Sent: Tuesday, March 09, 2010 10:02 PM
    To: multihulls at steamradio.com
    Subject: [MHml] Infusion Adhesive


          Polyester and vinylester resins have styrene in them. Epoxy resin does not.  The styrene acts rather like paint thinner.  Vinylester is the poor man's epoxy, as typical boat building resins in vinylester are 97% as strong as epoxy for 1/2 the cost.  Both are impervious to blistering.  I see no reason to ever use polyester in a multihull or racing boat.  

          The adhesive is for when you infuse in a mold.  It holds the glass in place before and while the resin infuses and cures.  You wouldn't need to use it on a flat laminating table, which is used for many home built hard chine boatbuilding projects, bulkheads, decks, Kelsall's radius chine building method, my building method, etc.

          Thanks for sharing the article!




         




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