yep. there’s two posted here. both in “tricks of the trade”.
I don’t recommend the “panda in a mash-tun”.
no instructions on this one: just a 1k word substitute
https://future4200.com/uploads/default/original/2X/7/7b8deab24d72f0d167af34ec73052cb3c1f808f9.jpg
of course you could buy a fuge that was actually designed for and rated for the task at hand. eg acespinner.com