[wtwtw]

I am looking for a place to puchase A/B foam for filling props. I am interested i it by the gallon or five gallons. Thank you

 

[chubacabra]

I would check out Smooth-On - Mold Making and Casting Materials for a World of Applications!

 

[Ugly Joe]

Here's another source as well...
Pour Foam, liquid 2 part, flotation, insulation

The price on their 2lb foam is a little less than the Smooth-On 3lb, but since you're just using it for fill, the 2lb would hopefully be adequate.

Keep in mind, this place is selling marine grade foam, and I don't know the resulting texture - but it sounds like it expands pretty well.

 

[lilgeek]

I would look up Burman Industries in California... They have A/B foam in both flexible and rigid and in different densities. They are really good. I have used their stuff often with great results.

 

[devils chariot]

I like the smooth-on urethane foam-it 8. works quick, sets fast, and last longer than they say it will after you open it.