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  1. AVMan
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    Materials & Factor of Safety

    Brian, good article. Do you have the letter from Dr. Jacobs' that this is in response to? I read it yesterday, but the email got deleted...
    Post by: AVMan, Jan 5, 2005 in forum: Materials
  2. AVMan
    Post

    sealing balsa core?

    Sealed Balsa The kerf cuts probably won't absorb too much resin (against the grain), but the infusion grooves will open up the end grains,...
    Post by: AVMan, Dec 31, 2004 in forum: Fiberglass and Composite Boat Building
  3. AVMan
    Post

    Why can't I find S-glass these days?

    Fiber availability People can't seem to find ANY fiber these days, especially carbon, Spectra, and S-glass. I think alot of S-glass is being...
    Post by: AVMan, Dec 30, 2004 in forum: Materials
  4. AVMan
    Post

    sealing balsa core?

    Sealed balsa Both Baltek (AlL600/10) and DIAB (ProBalsa Plus) supply sealed or coated end grain balsa. I don't think any other balsa supplier...
    Post by: AVMan, Dec 30, 2004 in forum: Fiberglass and Composite Boat Building
  5. AVMan
    Post

    Question:Carbon fibre tubes

    I forgot... Also these are only tensile moduli values...
    Post by: AVMan, Nov 9, 2004 in forum: Materials
  6. AVMan
    Post

    Question:Carbon fibre tubes

    Fiber moduli Typical longitudinal moduli (E1) HS Carbon: 34 Msi (235 GPa) E-Glass: (10 Msi (72 GPa) Aramid or Kevlar: 19 Msi (130 GPa) As...
    Post by: AVMan, Nov 9, 2004 in forum: Materials
  7. AVMan
    Post

    Help with Print-through Problem In The Hull

    Epoxy print through.. I believe what you are seeing with a dark colored epoxy hull is that the surface temperature is exceeding the epoxy's Tg...
    Post by: AVMan, Sep 19, 2004 in forum: Fiberglass and Composite Boat Building
  8. AVMan
    Post

    Methacrylate Structural Adhesive

    Structural Adhesives I know of at least several builders who use Plexus or other MMA adhesives to bond their molded stringer systems into the...
    Post by: AVMan, Sep 17, 2004 in forum: Boatbuilding
  9. AVMan
    Post

    Composite cores

    Polystryene cores If any builders are, they should not be using styrenated resins (polyester or vinyl ester) as the liquid styrene in the resin...
    Post by: AVMan, Sep 17, 2004 in forum: Fiberglass and Composite Boat Building
  10. AVMan
    Post

    question about carbon mast manufacturing

    Carbon Spars I would tend to agree with Henry, it would be best (ans less costly) to buy a carbon spar than to make one on the same level of...
    Post by: AVMan, Sep 17, 2004 in forum: Materials
  11. AVMan
    Post

    Vacuum bagging with fabric

    Vac Bagging a Pole One word of advice, if you try to bag a traditional glass fabric around the outside diameter of a pole, when you pull a vacuum...
    Post by: AVMan, Sep 15, 2004 in forum: Materials
  12. AVMan
    Post

    Help with Print-through Problem In The Hull

    Print Through I doubt that any problem with print through has anything directly to do with what core you are using (except for possibly wider...
    Post by: AVMan, Sep 14, 2004 in forum: Fiberglass and Composite Boat Building
  13. AVMan
    Post

    Fiberglass working with low emissions

    Low Emission Fiberglass Work Other than vacuum infusion, I can think of a few other ways to decrease styrene/MMA emissions: 1. Use flow...
    Post by: AVMan, Sep 10, 2004 in forum: Fiberglass and Composite Boat Building
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