>>57035579>Others will disagree but I don't think foil cards will ever be fully straight.It depends. Copying my last post.
>>56988481>>57035511 FYIwarping is caused by temperature and humidity, it is not a problem nor a permanent thing. It's like in a bimetallic strip if you know those.
When a material composed of layers of different materials is exposed to a changing humidity or temp, each layer expands or contracts at a different rate, and this causes the overall material to curve. This can be reversed simply by changing the temp or humidity again (cool, dry place), or as anon said
>>56988448 just press em in a toploader or between a bunch of energies
