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Part rubber part hardcase GRP tooling

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  • #16
    Originally posted by trout View Post
    What is that black box with fibers coming out?
    Again pictures to pour over.
    It's called a 'chop-gun'. It both cuts a long glass rope into short length shards, and sprays them onto the wetted GRP lay-up. Like so: https://youtu.be/XHQYYRl5fjw

    I found it the only economical way of quickly building up a GRP hull that has facetted surfaces and deep draft cavities. Traditional hand lay-up of glass cloth just won't cut it with such a tool of complex geometry.





    Also, using industrial spray equipment to lay down the PVC barrier and gel-coat expedited the work immensely.



    David
    "... well, that takes care of Jorgenson's theory!"

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    • #17


      Regarding joining two halves of a hull, I saw this vid sometime back which inspired me using a custom made bladder to get the join to conform. I love those elegant lightweight layups the aeroplane guys make.
      Last edited by Subculture; 03-17-2019, 07:17 PM.
      DIVE IN! Go on, go on, go on, go on, GO ON! http://www.diveintomodelsubmarines.co.uk

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      • #18
        Originally posted by Subculture View Post


        Regarding joining two halves of a hull, I saw this vid sometime back which inspired me using a custom made bladder to get the join to conform. I love those elegant lightweight layups the aeroplane guys make.
        Thanks for putting me onto these videos, Andy. I'll spend the next six hours watching GRP porn. Wow! This guy has it all in one sock!

        David
        "... well, that takes care of Jorgenson's theory!"

        Comment


        • #19
          The other videos found interesting was this one, again a fuselage moulding, but slightly more conventional technique.


          DIVE IN! Go on, go on, go on, go on, GO ON! http://www.diveintomodelsubmarines.co.uk

          Comment


          • #20
            Thanks David for posting that-It tends to keep the gears turning-

            Admiral Trout-I think that black box with the fibers is a glass chopper-I am pretty sure it sprays chopped glass into the resin coated mold-hence the mess on the floor!

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