Doing a production of Narnia and trying to convert a wooden platform to a "stone Table" Only one major issue... We must be able to return the platform to original condition once done. I am trying to figure out a way to use foam or maybe a cover and paint effect to achieve the look we desire.  ... Any ideas?

I was thinking about attaching tyvek house-wrap to the platform and sculpting a stone face out of "great stuff" foam. then fleckstone and shade the surface to make the rock effect. Once completed, I should be able to remove the "stonework" in panels by removing the tyvek sheeting.

I will try small scale to test concept. Once I try it, I'll let the group know.

Tyvek is the polymer vapor barrier they use under the siding on new houses. Think white painter suits. It is sort of a platicised paper. Comonly used in mailing envelopes.

I was thinking that it couple be tacked in place by using tacks or staples beneath the edge of the platform. Your idea of "cling wrap" might work too and be cheaper. There is a product used in warehouses that acts like Saran Wrap that could be worked in a similar fashion and does indeed stick to the piece like Saran.

I found a site I think might have a very useful product for forming rocks. I get packages with this stuff in it from time to time and think it could be fun to work with. I just have to make sure it will take the paint or can be sealed and then painted.  Check out the product and let your brain run a bit.

http://www.sealedair.com/products/protective/instapak/instapak.html

This stuff is a low density foam and when peeled out of the plastic has a very fluffy look. It might make good rocks if textured and shaded or snow drifts if painted white or flocked. I really like the idea of the "foam in place" stuff. you could make some real large pieces that way.

Fortunately, the notes for this show do not call for the table breaking. It is an adaptation of The Lion, The Witch, and The Wardrobe.  I have a roll of the stretch wrap. My boss donated to the cause. Now for some creativity and experimentation. I am seriously thinking Foam covered with "monster foam and texture painted. for the table top.