65/67/97//41 Home-made mag cards

[Matt Agajanian]

(09-18-2022 01:41 AM)Kostas Kritsilas Wrote:  All of the models you named use the same card type. The HP-71 and the HP-75 (if it uses cards) are different, and much harder to make, as they have embedded timing marks/tracks due to their being pulled by hand.

I see your point. I’m also curious about construction—the card stock, how to create a magnetic strip layer, its thickness, how slick the card should be for the mechanism to pull the card through, and so on.