Custom Extended Swim Platform

Discussion in 'Boatbuilding' started by tpenfield, Jan 8, 2019.

  1. tpenfield
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    tpenfield Senior Member

    I was thinking (for some reason) that the VE resin had a lower viscosity than Poly resin. Based on Ondarvr's comment, it looks like I had that wrong and it is opposite.

    I'll figure something out. :oops:
     
    Last edited: Apr 15, 2019
  2. tpenfield
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    tpenfield Senior Member

    Considering my resin predicament . . . Plan 'B' for the platform layup.

    I may do one infusion for the first 2 layers (CSM + DBM1708) and then hand lay-up/vacuum bagged for the remainder. . . . probably 3-4 layers (DBM1708 + Core + 2X DBM1708 + WR)

    What would be the minimum amount of time to wait after the initial cure (hardening) of a layer before adding the next layer of lamination?

    My hopes are to be able to add the next layer of laminations fairly quickly once the resin has done an initial set on the previous layer, so as to avoid surface prep between layers. I'll use peel ply on the infusion layer, but maybe not on the additional layers, if I can avoid it.

    Resin is AOC Vipel F010 TBN-23 (Vinyl Ester) . . . . Hardener will be MCP @ 1.5%
     
  3. tpenfield
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    tpenfield Senior Member

    So as not to get ahead of myself, I think I will run a test of the infusion with the VE resin, similar to what I did with the polyester resin.

    I was able to make some adjustments from the prior tests, which helped make for a successful infusion of the mold.
     
  4. Scott Danforth
    Joined: Mar 2019
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    Location: Bradenton, Florida

    Scott Danforth Junior Member

    Hey Ted, following along.
     
  5. tpenfield
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    tpenfield Senior Member

    Scott, glad to see you over here. I see that you signed up recently.
     
  6. tpenfield
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    tpenfield Senior Member

    Quick Update . . .

    I'll be running some resin infusion tests tonight, and hopefully the platform infusion on Thursday (April 18, 2019). Then some core layers on Friday.

    In the meantime, I made a quick rendering of what the platform 'should' look like on the boat . . .

    Before and After . . .

    IMG_0310C.jpg ESP-Mock-up-B.jpg

    I guess, I'll have to wait a while for the real deal picture :)
     
  7. fallguy
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    fallguy Senior Member

    Definitely a question for ondarvr.
     
  8. Blueknarr
    Joined: Aug 2017
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    Blueknarr Senior Member

    No minimum time requirement. As soon as the peal ply can be pulled with out disrupting the lamination stack it is good to go
     
  9. tpenfield
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    tpenfield Senior Member

    Yes, thank you. I conferred with Ondarvr via PM and he indicated the same. :)
     
  10. tpenfield
    Joined: Dec 2016
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    tpenfield Senior Member

    Quick Update . . .

    I ran the infusion test last night, doing 3 samples of laminate, peel ply, and flow media combinations as previously mentioned. Resin flow was from the lower part of the picture towards the top (samples were infused laying flat).

    IMG_2393.JPG


    The best result was sample #2, which had 1 layer of CSM and 1 layer of DBM1708, NO Peel ply, but flow media. Sample #3 was the worst in terms of wet-out. It was similar to sample #2, except it had a second layer of DBM1708. In between those 2, in terms of quality, was sample #1 which had CSM + 1 layer of DBM1708 AND Peel ply and flow media.

    So, it looks like I'll set up an infusion according to sample #2. The flow media will probably become embedded in the laminate, but that should be OK. (I think :rolleyes::eek::) )
     
  11. fallguy
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    fallguy Senior Member

    Almost every
    Did it just flow too fast on the failures for the extra stuff in the wetout?
     
  12. tpenfield
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    tpenfield Senior Member

    I'm not sure if the resin flowed too fast or not. For the amount of resin that would be in the flow media, it seemed like there was not enough to soak into the glass layers, with the sample that had 3 layers. I did have a small leak in the bag and could only pull about 15 in Hg (7 psi) of vacuum.

    Regardless, I'll go for the CSM + DBM1708 for the first infusion, then see what looks achievable from there.
     
  13. tpenfield
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    tpenfield Senior Member

    In other news . . .

    I wedged the ladder hatches out of their molds. A bit tougher than I would have liked and they are both going to need a bit of re-work.

    The second one that I vacuum bagged (left in picture) came out better than the first.
    IMG_2397.JPG
     
    Last edited: Apr 18, 2019
  14. fallguy
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    fallguy Senior Member

    The leak sort of throws out the entire test if you ask me.
     
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  15. tpenfield
    Joined: Dec 2016
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    tpenfield Senior Member

    I got the gelcoat on the platform mold . . .

    IMG_2396.JPG

    I plan on doing 2 layers of layup for the infusion (CSM + DBM1708). Then I will see what makes sense for the additional layers and the core.

    IMG_2405.JPG

    IMG_2407.JPG

    Also started on the infusion materials, but did not finish. The rest will have to wait until next weekend . . .

    IMG_2415.JPG

    IMG_2416.JPG
     
    Last edited: Apr 20, 2019
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