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  1. S

    High Performance Room Temp. Cure Epoxy?

    Standard Aeropoxy PR2032 resin with its various hardeners are rated around 196F Tg. For higher service temps here is their page. https://www.ptm-w.com/ptm-w-products/epoxy-products/epoxy-tooling-materials/high-temperature/ht-laminating-systems.html Have used PT2520, easy to work with...
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    Aeropoxy Questions

    Look at using a UV clear coat over the bare CF. Example: https://www.semproducts.com/refinish-uv-cured-clear/solaraytm-uv-clearcoat
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    Personal Cruiser!

    Moderator note. The post you're replying to was (very clever) spam; copying earlier posts from another member. To not take your reply out of context, I've included the quote: It is difficult to persuade anyone once their mind is set regardless of the facts. Generalizations like the last post...
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    Personal Cruiser!

    The fact that the Personal Cruiser flies safely and remains intact is validation that the methods and materials prescribed are suitable. In situ testing trumps stand alone material data. It does not take an engineering degree to make a relative comparison. One could compare Last-a-foam...
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    Personal Cruiser!

    Nice post! You forgot to mention polystyrene (EZ, Cozy etc.) disintegrates upon contact of any fuel/solvent. "...much of the industry" is not recommending against the use of Last-a-foam. The only recommendation against the use of Last-a-foam is based on anecdotal evidence not specifically...
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    Personal Cruiser!

    It means that you can sample a less friable and brittle core material and make a comparison to satisfy your own curiosity. Typically foam core material will have a part number stamped on it such as 3704.5 either on top or the edge. ACS will also tell you if you ask. Scott VanderVeen
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    Personal Cruiser!

    I have recently been in contact with Martin Hollmann. He has indicated that his position has not changed in the use of Last-a-foam. In recent conversations with Steve Rahm - his position has not changed regarding the use of Last-a-foam as prescribed in the Vision aircraft plans or the...
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    Personal Cruiser!

    Problematic? What evidence is there to back up your claim regarding Last-a-foam? As you stated yourself - there are no known failures beyond problems related to use in a firewall. You would think selecting it for use in an area that could see heat soaking temps above 300F would have...
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    Personal Cruiser!

    If you can not show your data (what, when and how a product was tested) then there is no validity to your claims and you are doing a great disservice by singling out Last-a-foam with broad sweeping statements. It is a disservice to the home builders who have used it successfully for years and...
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    Personal Cruiser!

    I have read with great interest the concerns around the use of Last-a-foam. As the owner of a small business that manufacturers composites parts I always want to keep abreast of concerns that builders or potential builders may have regarding the quality and safety of parts we supply or...
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    Vision Aircraft

    There are many Vision Builders out there who continue to build at their pace. Many who don't maintain websites. Go to: Pro-Composites Home of the Personal Cruiser Kit Aircraft for lastest info or questions. or American Affordable Aircraft, Vision, Experimental Aircraft, Sport...
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