>> I've gone to an art gallery and they suggest to use a technique
which is called "sandwich". They put the cel between two glases
sealed by pressure, so it's protected from dust and humidity.
But I don't know if a cel can be framed like that.
Sandwich! Yikes! I wouldn't do that to my cels.
A cel needs to "breathe". The acetate will expand and contract,
depending on the climate as to where it's kept and release gases,
thus the cel needs to hang free or "floated".
Please see past discussions in this column regarding this topic.
Metaphor
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