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If you use some chicken wire for your shape, you can drape it with
muslin.  It's a very lightweight cloth, and it's sold in an unbleached
tan color for making clothing mock-ups.  Once the muslin is stapled or
tied on the frame, you can tighten it up by using watered-down wallpaper
sizing.  Once it's completely dry, it can be painted, but don't
overpaint, or it will just absorb all the water and sag.  Painter's
canvas would work, and you could shrink it with gesso, but I think that
would be more expensive.

If you're up this way, we just did some fake rocks in our main exhibit
hall.  They were done with plaster, though. 


Kristie M. Mazzoni
Assistant Planetarium Director
Gengras Planetarium
The Children's Museum 
950 Trout Brook Drive
West Hartford CT 06119
 
(860) 231-2830 x24
 

-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Jamie Alonzo
Sent: Thursday, March 06, 2008 11:57 AM
To: [log in to unmask]
Subject: Needed: Help gettin' cavey...

ISEN-ASTC-L is a service of the Association of Science-Technology
Centers Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****

Hi all,

I run an afterschool program for teens out of Yale's Peabody Museum of
Natural History and my students are embarking on producing an exhibit
focused on the geosciences employing a cave motif.  Though I welcome any
suggestions/advice, I was hoping to get help with the following:
- A cheapish fabric that could be draped on the ceiling and/or walls
that could be made to look like rock;
- Other cost-effective rock solutions (we've considered carving foam);
- A source for cheap, large-ish (1'-6' diameter), round, rigid (i.e. 
planet-like) structures that could be cut and mounted;

If any of you had any of the above hanging around, available to loan,
I'd be interested.

Thank you!

Jamie

(Funding for our exhibit is provided by NSF & IMLS)



Jamie Alonzo
Coordinator, Education Special Projects
http://www.peabody.yale.edu/education/afterschool.html

Yale Peabody Museum of Natural History
170 Whitney Avenue
P.O. Box 208118
New Haven, CT 06520-8118

203.432.6577 v
203.432.9816 f
[log in to unmask]



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