Today a customer has brought in a 'Blackwork' embroidery of a chess board....and guess what? It's to be framed so that it can hang on a wall and also be taken down and laid flat to play chess on! Just what you want as a virtual beginner!

The lacing and standard framing I can do fine, but has anyone any ideas on the best way to tackle the 'feet'? Obviously it has to be something that will not mark a wall and will be firm enough for the 'chess board' use.
The other thing of course is the glass. She wants a non-reflective, and I'm wondering if standard 2mm would be strong enough....(frame size will be 50cm x 50cm).
Any thoughts or suggestions will be welcome. Thanks in advance.

Adrian