Rotman plastic sheets?

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Posted By: Tim Newcomb

All you folks who only deal in graded cards can skip this one:

Right now I have my ungraded M116s in older 15-pocket plastic sheets -- the brand name is Rotman. I'm using them because the Ultra-Pro sheets are a little too snug for a full-sized M116 -- very snug, in fact. They'll go in but I worry that the squeeze will create creases.

I'm a bit worried because compared to the newer sheets, the Rotmans seem sort of greasy or sticky, for no obvious reason. I have no idea if they're acid-free, etc. Very little info on the net about them.

Question #1: should I get the cards out of there, pronto, before Rotman melts them?

#2: If I stick the cards in ordinary acid-free plastic sheets, will the plastic loosen up over time into a good fit, or will the tightness put continued pressure on the cards and crease them?

#3 is there any way to slightly loosen or enlarge a plastic sheet (by heating or some other method?)

Thanks!

Tim