u/Independent_Lemon908 — reddlx

Using laminating pouches is a popular method to acheive the same snap as a real MTG card. That got me thinking about the constuction of those sheets. They seem to be made out of a layer of polyethylene terephthalate (PET) and an adhesive layer of ethylene vinyl acetate (EVA). The PET is the rigid spine of the pouch and the EVA is the flexible and adhesive layer that melts with heat and bonds to the PET.

That led me to find double sided adhesive PET sheets like the ones here: PET Sheets.

These ones are .1mm, leaving another .2-.25mm of paper thickness to work with. There might even be thinner PET sheets that I haven't found yet.

Has anyone ever tried using these sheets between two peices of paper to make proxies?

Hello and thank you for any help you can offer,

I'm attempting to make a rigid cardstock utilizing paper, water based polyurethane finish(Verathane Triple Thick), and milled glass fibers as a rigid filler for the polyurethane. I have a pretty strict limit on final thickness of the cardstock, a requirement for low VOC materials, and a small budget. I also don't have much in the way of equipment beyond simple home tools, hence why I'm not using a resin or a more straight forward option like a thermoplastic.

So far the polyurethane is near perfect for an adhesive between the sheets of paper. It is just a little soft and creases, rather than bending the length of the card stock when under stress. I really need it to have a little spine, so that when I apply stress, it bends along the length of the card stock.

Would you fine fiberglass folks inform if the milled glass fibers will behave like I hope they will when added to the polyurethane? Googles AI suggests it should work and I know milled fibers are used with resins and epoxies, but I'm uncertain if it will work with a polyurethane wood finish.

TLDR:

Will adding milled glass fibers to water based polyurethane finish make it more rigid and have spine when bent?