Help please w sealing EVA Foam: Mod Podge vs Plastidip?

Discussion in 'Replica Costumes' started by mizuno hadouken, Feb 1, 2012.

  1. mizuno hadouken

    mizuno hadouken Well-Known Member

    Trophy Points:
    557
    Has anyone out there had experiences with both that can talk to the pros and cons of sealing foam with each method? Comparison in quality and durability? Any help is appreciated. I even read a suggestion by Jowe to use both. Anyone have experiences with that method as well?
     
  2. Shades

    Shades Well-Known Member

    Trophy Points:
    866
    I am team plasti dip. It seemed like I was coating the crap out of stuff with the mod podge (elmers glue) and not getting as far as a couple coats of plastic. I also suggest spray plasti over the brush on stuff.

    I have also heard the Guesso, (spelling) may work. It is used to flexibly seal canvas for painting. I have some on order, but haven't tried it out yet.
     
  3. Shadow333

    Shadow333 Member

    Trophy Points:
    181
    check out my thread im using Hard Gesso and so far its amazing and super cheap it does take time to add layers but worth it....
     
  4. PetiteAltesse

    PetiteAltesse Active Member

    Trophy Points:
    331
    I've never used Plasti Dip, but I have used Modge Podge.

    For Modge Podge... it works, but it's kind of the cheap way out. It dries hard and globs up easily. You also have to do a lot of layers and... even then it tends to be weak. I used it for some craft foam armor I made (for a .hack costume) and the craft foam still managed to rip and fall apart.

    I would use Modge Podge for small crafts and go with Plasti Dip for the big pieces. I've heard nothing but good things about Plasti Dip and plan to use it myself for future projects.
     
  5. Mig407

    Mig407 Well-Known Member

    Trophy Points:
    615
    plastidip !!!!!!!
     
  6. mizuno hadouken

    mizuno hadouken Well-Known Member

    Trophy Points:
    557
    THanks.... I think that's what I'm actually going to do... fill cracks with the mod podge, then plastidip on top. I read somewhere that you can even spray mod podge after your done painting for extra strength. Anyone have any experience with this?
     
  7. PetiteAltesse

    PetiteAltesse Active Member

    Trophy Points:
    331
    You mean like... spraying it with clear acrylic? Yeah, that does strengthen it a bit more, but it wont be as sturdy as the Plasti Dip. I like your idea of using the Modge Podge to fill and THEN put on the Plasti Dip. That should work fine.
     
  8. mizuno hadouken

    mizuno hadouken Well-Known Member

    Trophy Points:
    557
    Yeah, I was thinking mod podge cracks, plasti dip coats, prime, paint, then spray on mod podge as the last layer as an extra seal. I think i'll try it on a test piece.
     
  9. Cal

    Cal Well-Known Member

    Trophy Points:
    866
    I am filling in the cracks with pva glue and using plasti-dip. So far so good.
     
  10. joee

    joee Active Member

    Trophy Points:
    331
    I've been using two layers of watered down flexbond.Then plastidip. Flexbond will seal and plasti will coat. I used this on my Batman begins. I've also seen this with Krylon as the paint. It flexes with eva.
     
  11. quixote coyote

    quixote coyote New Member

    Trophy Points:
    2
    i think i might be the only one on here, BUT, ive had nthing but trouble with plastidip.

    I'll get a can of sprayPD and use it, then once im done the can will sit for a few days while i begin work on other pices of my project...heres where things go...awry.

    the next time i use the stuff its just got the worst texture and theres nothing i can do to fix it. it looks all lumpy and ****ty, whereas with mod podge, on can control 'the lumpiness' . you just have to water it down a tad so it dries smooth.

    welp, that's my method. do like eight coats of watery-mod podge (or glue) THEN i'll add some acrylic paint in with the podge ( 4 coats), then finish it off with a few gloss/matte coats and viola!...all done.

    then again, im horribible with spray paints and will always choose brush over can (ive been painting since i was like 4...im no prodigy or anything, but technically have been painting for a time).

    good luck
     
  12. mizuno hadouken

    mizuno hadouken Well-Known Member

    Trophy Points:
    557
    Thanks everyone for the tips. This is good stuff.
     
  13. NexusFX

    NexusFX Well-Known Member RPF PREMIUM MEMBER

    Trophy Points:
    666
    im actually interested in the gesso myself, does anyone have a finished piece using this method?
     
  14. Fullmetalsam

    Fullmetalsam Active Member

    Trophy Points:
    341
    I always bump in these threads - I've tried a lot of things for sealing foam.
    The only product that works for me (and for a lot of other people) is Flexbond (it was mentionned by Joee - but nobody seemed to notice). It's a product from the company Rosco - if you're interested, look up the distributors in your region.

    It's pricy, but it's so much better than Mod Podge or Gesso.

    The only thing I can't comment on is how it compares to Plasti-Dip (it's not easily available here - so I've never tried it)... but some people here are swearing by this product and what it can do for foam build.

    So, if you're looking for a durable (I mean it will last for years, through many wearing if taken care of properly), flexible sealer for foam that will also act as an adhesion promoter for your paint job - go with Flexbond, you won't be disappointed.
     
  15. mizuno hadouken

    mizuno hadouken Well-Known Member

    Trophy Points:
    557
    I was actually going to ask you some questions about how you apply this stuff, but I ran into your tutorial doing a google search so I'm going to link it here since it's pretty sweet.

    Craft Foam Finish :: Full Metal Sam

    So I'm intending to use foam for my Iron Man armor and you mentioned that the coat of flexbond after paint will remove any effect of the paint. How does this effect metallics? Also, would you recommend weathering on the armor during the painting step, or after the flexbond over initial painting?
     
  16. Fullmetalsam

    Fullmetalsam Active Member

    Trophy Points:
    341
    If you follow my tutorial - the coat of flexbond you'll apply over the paint job will kill the "shine" that metallic paints usually have. So you'll end up with something that way more matte than glossy (the flexbond does a little shine on itself... but not the same thing at all compared to metallic paint). This is all very visible if you're using a "chrome" type paint (Krylon has this in a can)... where the coat of paint will actually reflect a lot of light (you'll be able to see blurry reflections) and when you apply the flexbond - there's nothing of that "chrome" effect remaining... it will look just like any other regular silver paint.

    You can try bringing this back with the type of top coat you'll use - but then the "glossier" the top coat, the more likely it is to crack when the foam will flex (even with the flexbond as an adhesion promoter). That's why I stick with matte top coat or "satin" top coat (I stay away from the crystal and the likes).

    As for weathering - I usually do this over the last coat of flexbond ... and then I apply the top coat.
     
  17. crabra comander

    crabra comander Sr Member

    Trophy Points:
    2,466
    Hey don't mean to thread jack but I am using mod podge on a pepakura MMPR helmet...Should I be using something else?
     
  18. mizuno hadouken

    mizuno hadouken Well-Known Member

    Trophy Points:
    557
    A layer or tw of mod podge then 2-4 layers of plastidip worked for me... good quality foam also makes a difference
     
  19. slipshot139

    slipshot139 New Member

    Trophy Points:
    16
    I have done quite a few foam builds and I swear by Plasti-dip. The thing is if you do it right you only have to use one or two coats. The stuff works like a dream.
     
  20. EamonClark

    EamonClark New Member

    Trophy Points:
    3
    Thank you for asking this question. I've been researching foam armor for a future project and this thread really helped me out.
     
    SuperSaiyanSam likes this.

Share This Page