Problem With Expanding Foam For Feet

[CalgaryBound]

Was wondering if anyone has had a problem with there foam not setting up.I sprayed my shoes 2 days ago and the foam still isnt completely hardened yet.I took a toothpick and poked a bunch of holes threw the outer layer today so air could get to the inside to see if that would help but there still real soft.

 

[TokyoRose]

I haven't been able to find a proper "Rigid" Spray foam at the hardware stores. All of the ones I've tried so far always end up having some flexibility to them, and some just end up crumbling away into little chunks and dusty bits. I know there is an industrial rigid foam insulation out there, that's used during housing construction, but i'm not sure where to find it.

I'm going to be starting my feet a similar way very soon, but I haven't decided what type of foam to use. Smooth-On carries a few different rigid foams, which I was thinking of just pouring onto the shoe a bit at a time, letting it set up and then pouring a bit more, until I get enough coverage to sculpt what I want. Not sure which density of foam I'd want to use though.

Industrial Plastics and Paint (In Calgary) carries Smooth on, and this other type of 2 part expanding rigid foam that I cant remember the name of right now. We use it at work all the time and prefer it to the smooth on foams for most of our uses, but it's pretty tough when cured and might be a b*tch to sculpt with. I think that's the one I'm going to try but I might be setting myself up for failure. If you go into IPP, it's on the same shelf as the Smooth-On stuff, just on the other end in metal pint/gallon kits (I think). It's a bit pricey though but expands like a mofo. If you decide to go with Smooth-On, it would probably work pretty well too and a trial kit would probably be enough for a pair of feet. You can get it at IPP or from Rick at Gyptek over in Dover. He's a nice guy and the "Official" Smooth-On dealer in Calgary, I highly recommend doing business with him.

Hope that helps, and let me know how they turn out. Like I said, I'll be starting a pair soon as well and would love to see how you go about your.
(If you have any other questions, feel free to PM me. After all, we're practically neighbors. Good to know I'm not the only nerd... I mean Hunter in the city)
Brandon.

 

[chickenjug]

I just finished shaping my foam feet. I used the basic 'great stuff' expanding insulating foam. It has held up to my practice walking even before I added the latex.
The only wet spot that I found was in the largest toe. I trimmed that back quite a bit to add the claws and I found a 'creamy center.' This still hadn't set up after two weeks. It seems that the foam protects itself from drying.

They are so completely sealed in latex now that, even if the foam turns to dust, I expect them to retain the foot shape.

Ask me again after Halloween!

 

[xdmray]

unfortunately, great stuff requires air to dry. when you put too much in at once the middle takes forever to cure. You have to do it in thin layers.
but you already know this now....

it will eventually cure, but who know how long it could take depending on the amount. having a latex seal around it doesnt help.

 

[CalgaryBound]

Thanks for all the responce I appreciate it.I guess Ill just let them sit for awhile and see what happens.TokyoRose Ill shoot you a pm.

 

[CalgaryBound]

Well figured out the problem with the foam.I grabbed the wrong can the first time the foam stayed flexible that I used WHOOPS.So I resprayed them today and there already dry.Thats what I get for not paying attention!

 

[Effects Guy]

Spray foams can be really unreliable. I try to stick to polyfoams when I need something with that kind of texture.