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  1. ArturoJones

    Cost of Pre-Pregging

    Does anybody have a ROM estimate for the cost of pre-pregging as a service? That is if I was to supply dry fabric and my own resin formulation (hot-melt epoxy), what would I get charged for someone to pre-preg it for me. Secondly does anyone know of any pre-preggers who would be willing to do...
  2. ArturoJones

    pinholes and surface defects of any kind

    As always, excellent information from CompositeGeek and CompositePro. I have a question on a related note. I'm not sure if this a generally observed phenomenon, but in my own experience, pinholes and other surface defects invariably manifest themselves on the tool side as opposed to the bag...
  3. ArturoJones

    Sealing Vacuum Leak in Welded Al Tool

    We have a welded aluminum tool which has developed a vacuum leak(s) at the weld. The tool sees 300ºF during the cure cycle. The two options I have contemplated to fix this are a) to grind out, re-weld and re-finish the tool surface or b)seal from the backside with an epoxy sealant. I don't...
  4. ArturoJones

    Bladder Molding Advice

    I am currently involved in an effort to develop new molds for bladder molded tubular products and I am looking for some advice on tooling and process design. I have experience and a reasonable understanding (I think) of autoclave molding, film infusion, as well as the liquid molding...

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