Loaf Molds out of Styrofoam

[KnowWhat]

Has anyone ever tried making loaf Molds out of Styrofoam?

I have the coolest hot wire styrofoam cutter, and I was thinking I could just use toothpicks to "nail" it together, and it would easily come apart to get the soap out.

Then I thought that maybe the soap would get too hot and melt the foam. I don't want a gooey mess. I know FO's wreak havoc on styrofoam cups, but would they be strong enough to ruin the foam once they are mixed with the soap?

TIA

 

[donniej]

I'm skeptical that it's styrofoam is compatible with lye or fragrance. Maybe if you use some 2 sided tape and cover it with plastic wrap?

I also doubt that nailing it together with toothpicks will hold... I'd use packing or duct tape.

 

[Northland Naturals]

i would think that if the FO is strong enough to eat through styrofoam, lye certainly would. i have plastic cups that can't even stand up to a diluted FO, i don't think i would even attempt styrofoam. test it out though, dip a small piece of styrofoam in traced soap and see what happens. just watch out for those fumes!! burning styro is no good.

 

[KnowWhat]

By the way, I am planning to line the mold.

Great idea of dipping styrofoam in traced soap to see if there is a reaction. I would have never thought of that. Thanks.