wooden puzzle

[A.Wise]

I have a wooden puzzle that is very old. It is about 3/16" thick. I built up the sides with foamboard and layed a piece of mylar over it, pulled as tight as possible and atg it down very close to the outer edge of the puzzle. Then put a matboard on top of the mylar and conservation glass. The problem is when I turn it over to close it up the pieces shift some and some of the pieces stick out.

The larger pieces on the top rest on smaller pieces so it seems to let them shift. Also one of the larger pieces on the bottom are warped so that sticks out too. The customer doesn't want it glued down to save it's orginal state. Any ideas on how to get the pieces to stay in place?

 

[Ron Eggers]

I think there are some items that are better dispayed on a tabletop, perhaps with a removable acrylic cover. That way, gravity works with you instead of against you.

Mylar doesn't stretch, does it?

I suppose you could stretch some tulle over it instead of Mylar.

 

[HannaFate]

Use a piece of museum glass instead of mylar. Put a packet of silica gel in the back of the frame to remove moisture.