The link "Punched-Card Typography" at the bottom really should lead to the original site, which, besides interactive animations [1][2], includes a font editor [3].
Masswerk, I agree. I’ve known Marcin for a long time and just sent him a message asking why he didn’t link to your original page. It may have been just an oversight.
[1] https://www.masswerk.at/misc/card-punch-typography/
[2] https://www.masswerk.at/misc/card-punch-typography/part2-ibm...
[3] https://www.masswerk.at/misc/card-punch-typography/editor.ht...