hi wondering if anyone can help me I'm a big star wars toy and figure collector and got into custom figure building but wanted to card my figure on custom cards for my own collection. I have card templates but wanted to vac form my own blister bubbles, I have built a very small vac former that I think will do the job. I tried to use an old plastic bottle made from PET I put it in the oven but it seemed to shrink not sag.. Is this because I'm using the wrong plastic or is it because its been vac formed before or just something else? if your wondering why I'm trying to use plastic bottles its because 2 reasons I cant seem to source cheap clear plastic and my kids go through so much bottled water there's no harm in trying it for free
can anyone help me with this problems has anyone used plastic bottles with success or is there a reason why its not used that I don't know?
any help would be much appreciated