Hi all. 45 yr old UK Dredd fan here. Have been since Prog 1 2000ad in 77. Been looking for a while at building my own Dredd helmet. Think I'm going to go down the pdo file route. Just a couple of things, does anyone know how to open pdo files on the IPad? I've tried a few apps that SAY its pdo friendly but doesn't open the pdo file. Could someone help in listing the right materials to use, resin, etc and ifformation on the build process. Any help would be much appreciated. Cheers.