I'm not sure if this will help or not...
I do a lot of assemblage work and then use a piece of plexiglass - no frame - over it. And we've mounted it using the "J" glass hangers:
art || w || | o || | r || | _ k || | / edge | the wall ================================== (end of J hanger) | | view from above.
The idea is to trap the edge with one of these nailed in just below the edge so that the "cup" of the J covers the art work.
These are rather sharp on the end that holds the flat in and if not careful will def scratch the surface. You could use some sponge foam or a hard rubber "dot" to place between it and the surface. Mouting anything that looks that delicate is almost always a nightmare.
I've only used this in gallery hanging and don't know how it would hold up in someone's collection.
i;ll post this and hopefully the diagram above will show up correctly.
- frank.
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