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Sue Ann-

I agree with Lath and Jeff that you should use a polycarbonate  
substrate.  For this application we would print on a plastic white  
photo film, laminate that to a .060" PETG substrate and then cover the  
surface with a 5 mil polycarbonate.  To prevent picking the edges, we  
cut a 1/2" radius on each corner and fold a 1" nylon webbing over the  
edge and sew around the perimeter.

Steve Grotenhuis				Tel.:  651-221-2564
Project Production Manager		FAX: 651-221-2544
Science Museum of Minnesota		email: [log in to unmask]
120 W. Kellogg Blvd.
St. Paul, MN 55102

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On Feb 26, 2006, at 12:37 PM, Sue Ann Heatherly wrote:

> ISEN-ASTC-L is a service of the Association of Science-Technology  
> Centers
> Incorporated, a worldwide network of science museums and related  
> institutions.
> *********************************************************************** 
> ******
>
> Need some expertise!
>
> We're working on an exhibit on the sun, where a backlit image of a
> "sunspotty" sun is displayed. In a basket will be large pieces of a  
> jigsaw
> puzzle. The puzzle pieces are of the radio sun from the same date. By
> overlaying the puzzle pieces onto the optical image, you will easily  
> see
> that the bright spots in the radio picture correlate with the location  
> of
> the sunspots in the optical picture.
>
> Now, here's where I need some advice. The radio puzzle pieces need to  
> be
> translucent. How can I adhere a transparent image to plexi or some  
> such to
> create the puzzle pieces?
>
> Thanks for any suggestions!!
>
> Sue Ann
> NRAO-Green Bank
> [log in to unmask]
>
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