How to tuck calf skin drumheads

I filmed this in 2018, promptly forgot I'd done that.
I don't make drumheads currently, but I get a couple of emails a month asking for tips. I thought this was pretty handy if you wanted to do it as I had to find this information from all over when I started. It's becoming a somewhat lost skill. If anyone finds it useful, let me know!
www.majetone.com

[@SaraBarczay]

Hi! Can you share where you get the skins themselves from? Thank you!

[@MAJETONE]

Hi there, there's a bunch of different suppliers - I've used Stern in the US, but also different ones in Pakistan that you can connect with via places like Alibaba marketplace or eBay.

[@user-mz8fi8qf8g]

Where did you get your tucking tool?