zlacker

>>mhb+(OP)
I discovered this site two decades or so ago. I used it to teach my then young son—whose name is, appropriately, Ian—how to tie the fast Ian Knot. My spouse, a kindergarten teacher, used it to learn how to tie student's shoes with Ian's Secure Knot which has been very helpful as kid's shoes with conventional knots tend to come untied on the playground.

It is sad to see that Ian is struggling to fund the site: https://www.fieggen.com/shoelace/support.htm

>>Wistar+Gt
It's a handy site, but it's worth noting that;

"Ian's Secure Knot" is just a rebranding of a knot that is also known as the "Berluti knot", "Tibetan Trekking Knot", "Sherpa Knot" or the "Double slip knot".

It's a great knot, the best way to tie your laces, but spin it as much as you like it's just a bow with a double twist on the second twist, and has existed since long before Ian or Berluti tried to claim it as their own.