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  1. P

    Delamination/bubble?

    Yeah notable surface temp difference between the two colors, I shoved the nose out into the sun yesterday at noon (with most the grey masked off, I left a little strip of grey exposed that already delaminated to compare temps). 65F ambient, the white was 25-30F hotter, grey was 55-60F hotter...
  2. P

    Delamination/bubble?

    I confirmed I have a large roll of white plotter paper laying around the garage still, I'll mask off the grey and put the top outside next good sunny day and see how the white reacts.
  3. P

    Delamination/bubble?

    Oh, missed this reply before. I wet skimmed to foam with the laminating resin to make sure all the voids got filled to help key in the skin and started the lamination right away on it (ie not a typical skim coat that you let cure first). Everything was fully cured (ie not sticky) from all my...
  4. P

    Delamination/bubble?

    It was the front gray point of the cabover section that bubbled, it was the only spot the sun was hitting though. Painting to just experiment would be a huge expense if it were to fail, but along that thought process I could get something white to mask off the grey sides and put the camper top...
  5. P

    Delamination/bubble?

    Well if its just a fluke in those spots yeah I agree drill/inject and its just cosmetic. If its not a fluke then I have no structure anymore... Before I set it out in the sun to find out I wanted to discuss what is going on.
  6. P

    Delamination/bubble?

    Here was one of the bubbles caused by the heat blanket during the construction.
  7. P

    Delamination/bubble?

    Well I have some experience with the same deal when a heat blanket was laid over the lamination and moving blanket on top of that when I was working in colder temps before. I was glassing across a seam and cured lamination areas lifted off the foam core. I cut those areas out and fixed them...
  8. P

    Delamination/bubble?

    Did those photo's not show up? The top surface is white and the vertical sides are light grey to match my silver truck a bit more (I knew they would be a tad hotter than white but far from the heat black generates). I concur on the two bubbles being fixable, the cause of the issue and if it'll...
  9. P

    Delamination/bubble?

    Hi all, hoping the wise minds here could potentially weigh in thoughts. I used the resources here quite a while ago and kicked off a camper project out of foam core. It has dragged out (that is life!) but I was hoping to wrap it up this spring but ran into an issue. The project has been in the...
  10. P

    Laminating resin

    Anyone know of a retail source to check out the DER line? I wasn't pulling one up very easily off google. Right now I'm leaning towards the US composites 635 4:1 fast hardner line. Looks like 12.5gal kit with shipping would run ~$600. If I got rolling on this during the spring temps in the...
  11. P

    Laminating resin

    Fair enough, I'll likely get some sample foam and resin to play around with a bit while I continue the rest of my planning. Just wanted to make sure if some of the cheaper epoxy wasn't a good fit for some reason or another.
  12. P

    Laminating resin

    Without a handy/affordable source for polyurethane foam in the thicknesses I want (1", 1.5", 2") I'm not really trying to back track to polyester resin currently, just trying to figure out what level of epoxy is needed for my application.
  13. P

    Laminating resin

    Yeah the original thread is here: http://www.homebuiltairplanes.com/forums/composites/8611-some-help-layup-design.html I want to build a pop up truck camper that is light weight and has good insulation. The thin cab over section required more than a hand wave structurally which is why I came...
  14. P

    Laminating resin

    Mainly just looking for any caution on using the cheaper resins on my list, or good reasons towards the higher end of it (or any ones I left off that should be considered). From there the economics are what they are. I was mainly just pointing out due to the amount of resin I'll be using its...
  15. P

    Laminating resin

    Per my other thread about figuring out a structural calc for a light weight sandwich core pop-up truck camper I'm thinking about building (big thanks to wsimpso1 for helping me with the calculation spreadsheet) I now know what I need to do reinforcement wise to make the various areas work...
  16. P

    Some help with layup design?

    If your offer still stands I'd like to have you look at the calc. You have PM's turned off (or I'm not allowed the option to send you one or something). If you are able shoot a PM to me with your email.
  17. P

    Some help with layup design?

    Yeah, that is correct, my mistake on the sketch. Edit: corrected the sketch Say's you've elected not to receive private messages when I just tried.
  18. P

    Some help with layup design?

    Okay I worked up a spreadsheet, FYI: I've ignored the effects of the corner thicknesses, but I'm scratching my head a tad. I did it in a manner so I could add an additional reinforcement strip along the top channel if I wanted (see thickness t6 below). However when I run the calc with no t6...
  19. P

    Some help with layup design?

    Yeah likely over thinking it but I'd rather make sure of a few things before I dive in and spent the time and money on it. Another query about general ply layup in areas that aren't stressed heavily. If going with 2 or 3 layers of BID do people tend to just lay them all up in the same...
  20. P

    Some help with layup design?

    I see the first link shows your projects and its projects like those that make me fully comfortable I can make a camper out of stuff people are flying around in. ;) But I still need to determine what plys are needed in my application when I get to that point. The second link just looked like a...
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