I ordered a several of these membrane display frames on e bay and the first of them arrived today and the stand was inside it between the membrane layers and predictably it's all stretched and deformed already (possiibly also damaged since one edge of the base was rough poorly molded plastic) - annoyingly this particular sized frame was intended for a very thin slab with fossil redwood stems, so it really needed to be as tight as possible to even stand a chance of securely holding it.
I knew the membrane would likely stretch and become loose with long term display of items but I didn't expect it to arrive already stretched out and well now i'm wondering if there's any way to "reset" the membrane so it's nice and tight again? I know certain plastic membranes i.e kitchen cling film and window insulation sheets shrink tighter with a little heat from a hair dryer, but didn't want to risk it without checking if any of you had tried it already or knew of an alternative solution.
I'll complain to the seller if I have to but it will just result in another month long wait for delivery from china if they send replacements or a refund and potential drama with the seller.