Post #657636 by MadDogMike on Sat, Nov 3, 2012 7:23 AM

Here's another packing method I use occasionally with spray expanding foam.

I started by lining the box with styrofoam, just because I had it handy. That decreases the amount of spray foam I need and decreases curing time. I sprayed a layer of foam into the bottom of the box

Then I put a plastic trash bag over the foam carefully covering all the wet foam. The foam is going to expand, you don't want it to expand up over the bag and get on your ceramic piece. I set the pieces on the bag over the foam, the foam expands up around the pieces and locks them in place.

After 24 hours of curing time, I pulled the bag over the ceramics and filled in some spray foam around the sides. Remember not to fill it completely full as it will expand. (this picture was taken after the foam expanded)

Locked into place and ready to ship

You'll notice that there is protection on the sides and bottom but no foam over the top. I usually put another piece of styrofoam over the top but don't have room here so I'll put a couple of layers of cardboard over it