Problem with wood glue cracking on EVA foam

[korigirl]

I bought some wood glue (specifically Titebond) to seal my eva foam since Elmer’s white glue was taking too many coats (which equals too much time). I am spraying the sealed eva foam with plasti-dip because in my experience, the plasti-dip looks better if the foam is already sealed somewhat.

The problem is that the wood glue is absolutely inflexible. If the foam bends, it cracks . It’s definitely the glue cracking and not the plasti-dip + spray paint applied afterwards. This is fine for pieces that I know won’t flex, but I have pieces that I know WILL need to flex. What is my best solution? I have not been a fan of the modge podge sealant as the brush stroke drive me bonkers. Also, it takes several layers as well as the Elmers glue. I love the strength the wood glue gives the foam.

If I add more water to the wood glue, would that help? At the moment, I am adding little water to the glue as to keep it pretty strong.

 

[Pyrotechx]

I bought some wood glue (specifically Titebond) to seal my eva foam since Elmer’s white glue was taking too many coats (which equals too much time). I am spraying the sealed eva foam with plasti-dip because in my experience, the plasti-dip looks better if the foam is already sealed somewhat.

The problem is that the wood glue is absolutely inflexible. If the foam bends, it cracks . It’s definitely the glue cracking and not the plasti-dip + spray paint applied afterwards. This is fine for pieces that I know won’t flex, but I have pieces that I know WILL need to flex. What is my best solution? I have not been a fan of the modge podge sealant as the brush stroke drive me bonkers. Also, it takes several layers as well as the Elmers glue. I love the strength the wood glue gives the foam.

If I add more water to the wood glue, would that help? At the moment, I am adding little water to the glue as to keep it pretty strong.

If you're willing to go a little more on the expensive end, I have had some amazing results with something from Home Depot, which is basically epoxy resin.

The stuff brushes on and looks nice and shiny and can be sanded/painted over. It is like $25 for two bottles (it is part A and part B) that lasts quite a while.

I'll see if I can find the link.

 

[korigirl]

If you're willing to go a little more on the expensive end, I have had some amazing results with something from Home Depot, which is basically epoxy resin.

The stuff brushes on and looks nice and shiny and can be sanded/painted over. It is like $25 for two bottles (it is part A and part B) that lasts quite a while.

I'll see if I can find the link.

Do you use the epoxy resin and then cover with plasti-dip or just go straight to the spray painting (or whatever method of paint you use)?

I looked at the epoxy resin's at Lowe's last week, so I'm interested to see if you can find a link. I saw a two part mix but the bottles were tiny, so it didn't seem practical. How many coats do you use? It flexes well or well-ish?

 

[Pyrotechx]

Do you use the epoxy resin and then cover with plasti-dip or just go straight to the spray painting (or whatever method of paint you use)?

I looked at the epoxy resin's at Lowe's last week, so I'm interested to see if you can find a link. I saw a two part mix but the bottles were tiny, so it didn't seem practical. How many coats do you use? It flexes well or well-ish?

Rust-Oleum Parks 1-Qt. Gloss Super Glaze Finish and Preservative-241352 at The Home Depot

this is the stuff I used. Here is a pic of me bending it on foam

I put two coats on my helmet and it was solid but also had some flex. This stuff doens't crack at all, even put over cracked wall putty.

http://www.therpf.com/attachments/f24/tron-rinzler-costume-wip-imag0365.jpg-235836d1380055463


oh yea, I put two full coats on my helmet and didnt eveb use a lot at all, literally have 90% left.

 

[korigirl]

Rust-Oleum Parks 1-Qt. Gloss Super Glaze Finish and Preservative-241352 at The Home Depot

this is the stuff I used. Here is a pic of me bending it on foam

I put two coats on my helmet and it was solid but also had some flex. This stuff doens't crack at all, even put over cracked wall putty.

http://www.therpf.com/attachments/f24/tron-rinzler-costume-wip-imag0365.jpg-235836d1380055463


oh yea, I put two full coats on my helmet and didnt eveb use a lot at all, literally have 90% left.

Very intriguing. It seems kind of overkill for just sealing the foam. It does, however, seem very useful to use on top of your paint to give it a nice top coat and shine (and strength).

hmmmm

 

[Reznor9]

Rust-Oleum Parks 1-Qt. Gloss Super Glaze Finish and Preservative-241352 at The Home Depot

this is the stuff I used. Here is a pic of me bending it on foam

I put two coats on my helmet and it was solid but also had some flex. This stuff doens't crack at all, even put over cracked wall putty.

http://www.therpf.com/attachments/f24/tron-rinzler-costume-wip-imag0365.jpg-235836d1380055463


oh yea, I put two full coats on my helmet and didnt eveb use a lot at all, literally have 90% left.

i know this is an old thread but has anyone else tried this? I'm curious and looking to find a flexible sealer for Eva foam. I tried gorilla wood glue and it looks great after plastidipped but if I bend the piece you can see wrinkles under the plastidip which I guess means the glue cracked.

 

[Karol]

Roscoe FlexBond.