Plasticard?

Midwest Wood Products sells a thicker sheet stock which has a PVC core and styrene surfaces.   I last saw some at a LHS before it shut down.    I still have a scrap piece left over.  It was good for scratchbuilding where you need the main core pieces to have good structural strength (i.e. the backbone on a scratchbuilt hull form.).

AFAIK plastic card is sheet styrene. All the build articles I've ever sen that use it looks the same to me.

I've dabbled in alternate suppliers that seem cheaper, but it's either pebbly(for sale signs) or just not really usable.

Don I was permanently banned from the Computer Science Lab in Univ.

I was working on a big model of a building that had major sun control structures. So I went in and wrote a bunch of code for a series of punch cards that would be all holes. Back then you wrote the code in Fortran or what ever else you programmed in, and sat at a card punch machine.

I destroyed the machine.

Anyone remember IBM punch cards?  They are cardboard, but they had a surface finish of some sort of plastic coating so that they would not change size at all with changes in humidity.  Makes great modeling material- primes and paints almost as easily as styrene sheet.  However, hard to get ahold of any now.  I used up all I had collected, and then a guy offered to sell/give me a couple of pounds of the stuff if I would pay postage on it, which I did.  That was several years ago- I have about a third of it left.  Don't know whether I will ever be able to find it again.

I also save business cards I do not need now.  Some of them have a glossy coating- not as good as punch cards, but I get them free and they still work fairly well.

Looks like some kind of laminated plastic, so tried a google image search.

Maybe ABS sheets?  Or PVC if they make sheets of that kind.  The frayed edge looks similar to when I took a saw to some piping.

regards,

Jack