View Full Version : Expanding foam beads

04-19-2005, 12:00 AM
When i was in shop class in high school, along time ago, we used these little foam beads, put them in a metal shell, put a special clamb on the two halves and submersed it in boiling water. When it was done we got a foam skull. Now that i am casting aluminum there are projects that i would like to make a master mold out of aluminum then use the beads to make blanks for lost foam casting. I am having a horrible time finding a dealer for these beads, i have been through google and yahoo looking for the beads. If anyone has an idea where these can be got please send me the link or email me. I know this is how general motors actually casts some of its engine blocks and components, thats one of the things i have run into going through searches so its not like a lost art or something. If this sounds desperate it is. It will save me piles of time duplicating parts to cast.

04-26-2005, 11:29 PM
Try these guys:
I've made plenty of decoys with it but don't know if it will vaporize during casting.

04-26-2005, 11:43 PM

04-27-2005, 12:38 AM
.. Removed by Wayne

04-29-2005, 02:48 AM
try a google search on "eps" or "expandable polystyrene" and manufacturers