Quoted from zahner:How’s it going? You did a Flash Gordon set and a Fathom for me a while back. Still get positive feedback on those!
Was wondering if you have printed any of your stuff on magnetic paper. I did a prototype for my Houdini and the concept was good, but my artwork questionable (kind of uninspired). I wondered if you could do a Houdini set (history and free play), but on magnetic printer paper. The reason for the magnetic paper is that the apron is one big sticker with no other way to attach an actual card set. Looking for something that matches the steampunk vibe and introduces some color to the otherwise subdued apron.
Let me know what you think.
Mark
Hi zahner!
Glad to greet you!
Glad for Flash Gordon Cards too! I enjoyed a lot of designing them. I got 4k UHD version of this movie! I love it!
Yes, I have experience with magnetic sheet. I bough a pair of sheets last year for to do some test and result was perfect.
I bought magnetic sheet with 2 widths for an pinball apron´s projet:
This is the thinner magnetic sheet I get, it is 0,6 mm.
This is "Magnetic Sheet 0,6 mm width":
Magnetic Sheet 0,6 mm. Mikonos.jpg
A comparative between 0,8mm. and 0,6 mm.:
Magnetic Sheet 0,8 mm. Mikonos.jpg
For you cards it will be better 0,6 mm.
Let me some days and I will write you with those new designing!
Bytheway, I´m working new print materials for cards, like "Semi-plastic flyer paper with double gloss protective lamination". Cards become more rigits! 
Here some examples:
https://zonaarcade.forumcommunity.net/?t=62195252#entry452540180
https://zonaarcade.forumcommunity.net/?t=61303818#entry453568067
https://zonaarcade.forumcommunity.net/?t=60922625#entry453498822
https://zonaarcade.forumcommunity.net/?t=62138385#entry452934490
https://zonaarcade.forumcommunity.net/?t=60425177&st=15#entry452882742
I have a lot of new materials, but I have to take photos about results. 
Best regards
Mikonos