I would like to make a case to hold my lenses - or at least an insert into an existing case, which I can custom cut, to fit a variety of lenses.
This site offers several types of foam rubber. Which type would be best for this purpose ? If not polyurethane, then what type ?
I would like to avoid anything which could out-gas something harmful to the lenses, many of which are rather old.
Thanks in advance.
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