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Vacuum bagging

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  • Richard Spelling
    The recent references to vacuum bagging have piqued my interest. Internet research shows you can vacuum bag with nothing more than strip caulking, clear
    Message 1 of 3 , Apr 30, 2002
      The recent references to vacuum bagging have piqued my interest.

      Internet research shows you can vacuum bag with nothing more than strip caulking, clear plastic, and a shop vac.

      Verrrry interesssting. Next piece of ply I splice or laminate will be shop-vacuumed.

      Any of you experts out there want to contribute your two cents?

      Richard Spelling - http://www.richardspelling.com
      http://www.chebacco.com - http://www.richardspelling.com/richardsboats/


      [Non-text portions of this message have been removed]
    • Richard Spelling
      Vacuum bagging link from down under. http://members.ozemail.com.au/~flyingwing/vacbag/ ... From: Richard Spelling To:
      Message 2 of 3 , Apr 30, 2002
        Vacuum bagging link from down under.
        http://members.ozemail.com.au/~flyingwing/vacbag/

        ----- Original Message -----
        From: "Richard Spelling" <richard@...>
        To: <bolger@yahoogroups.com>
        Sent: Tuesday, April 30, 2002 12:16 PM
        Subject: [bolger] Vacuum bagging


        > The recent references to vacuum bagging have piqued my interest.
        >
        > Internet research shows you can vacuum bag with nothing more than strip
        caulking, clear plastic, and a shop vac.
        >
        > Verrrry interesssting. Next piece of ply I splice or laminate will be
        shop-vacuumed.
        >
        > Any of you experts out there want to contribute your two cents?
        >
        > Richard Spelling - http://www.richardspelling.com
        > http://www.chebacco.com - http://www.richardspelling.com/richardsboats/
        >
        >
        > [Non-text portions of this message have been removed]
        >
        >
        >
        > Bolger rules!!!
        > - no cursing, flaming, trolling, spamming, or flogging dead horses
        > - pls take "personals" off-list, stay on topic, and punctuate
        > - add your comments at the TOP and SIGN your posts, snip all you like
        > - To order plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA,
        01930, Fax: (978) 282-1349
        > - Unsubscribe: bolger-unsubscribe@yahoogroups.com
        >
        > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
        >
        >
        >
      • thomas dalzell
        As I have mentioned earlier, you can bag as you mention, but be sure to include the equivalent of 4 x 1/4 holes in your hose to keep air cooling the motor. A
        Message 3 of 3 , Apr 30, 2002
          As I have mentioned earlier, you can bag as you
          mention, but be sure to include the equivalent of 4 x
          1/4" holes in your hose to keep air cooling the motor.
          A more scientific method is to just keep drilling
          holes while watching a vaccum guage, until the
          pressure starts to drop appreciably. I know the 4
          holes are great for the small shop vacs.

          Also, understand the SV is fine for cloth, and ply,
          and scarphs. It often will fail to bag veneer, where
          even quite compliant sheets may have local points the
          SV can't compress. Birdseye is an extreme example of
          this. It won't work generally with white and yellow
          glues of a type that require high pressure levels. If
          you bag something like a curved deck, be sure to let
          the material run beyond the imediate perimeter. The
          clamping is lowest at edges. You could finess this
          with something like slightly thickened epoxy towards
          the edges, but just planing for overhang is easier. I
          think the SV is actualy superior to other alternative
          in situations where the extra pressure isn't required.
          It empties bags, and has plenty of force for certain
          functions. When I layed up the 24' panels of my tri,
          it crushed them down like nothing. I figured the
          larger the panel, the larger the vaccum you would
          need. Well other than a situation where you might
          need to overcome cumulative leaks you could bag panels
          a mile long with a simple SV. the clamping pressure
          of the SV isn't the issue, the clamping pressure comes
          from the earth's atmosphere, the vac just empties the
          bag. The power of the motor is only relevant as
          relates to its ability to move enough air out, and to
          create a sufficient difference in pressure in the
          apperature accross which the air is moving.

          If nothing else you will develop a whole new
          technology for crushing beer cans.

          --- Richard Spelling <richard@...>
          wrote:

          <HR>
          <html><body>


          <tt>
          The recent references to vacuum bagging have piqued my
          interest.<BR>
          <BR>
          Internet research shows you can vacuum bag with
          nothing more than strip caulking, clear plastic, and a
          shop vac.<BR>
          <BR>
          Verrrry interesssting. Next piece of ply I splice or
          laminate will be shop-vacuumed.<BR>
          <BR>
          Any of you experts out there want to contribute your
          two cents?<BR>
          <BR>
          Richard Spelling - <a
          href="http://www.richardspelling.com">http://www.richardspelling.com</a>
          <BR>
          <a
          href="http://www.chebacco.com">http://www.chebacco.com</a>
          - <a
          href="http://www.richardspelling.com/richardsboats/">http://www.richardspelling.com/richardsboats/</a>
          <BR>
          <BR>
          <BR>
          [Non-text portions of this message have been
          removed]<BR>
          <BR>
          </tt>

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          <br>
          <tt>
          Bolger rules!!!<BR>
          - no cursing, flaming, trolling, spamming, or flogging
          dead horses<BR>
          - pls take "personals" off-list, stay on
          topic, and punctuate<BR>
          - add your comments at the TOP and SIGN your posts,
          snip all you like<BR>
          - To order plans: Mr. Philip C. Bolger, P.O. Box 1209,
          Gloucester, MA, 01930, Fax: (978) 282-1349<BR>
          - Unsubscribe: 
          bolger-unsubscribe@yahoogroups.com</tt>
          <br>

          <br>
          <tt>Your use of Yahoo! Groups is subject to the <a
          href="http://docs.yahoo.com/info/terms/">Yahoo! Terms
          of Service</a>.</tt>
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