I recently managed to leave some FUD pieces overnight* in some cheap nail varnish remover. When I eventually rescued them I found that they had softened and become pliable. I would guess that they would be nearly as pliable as styrene sheet. Has anyone else seen this? The active ingredients of the NVR are Acetone Water Propylene Glycol Glycerin. *OK I got distracted and forgot about them until the next morning.