My son of fermentation chiller!

Just want to give myself some props for pulling this one together! ... Lowe's did not have the 2" thick insulation that the plans call for, so I glued two 1/2" thick sheets together. A little rough around the edges yes, but it's been keeping my trappist at 69 for 2 days now without need to swap out ice. Now that's a good seal!

Next up... A DIY wort chiller...

Looks good!

I used that stuff once to ship food to a friend. I had a small cooler large enough to hold probably a 6 pack, and put a frozen slice of dessert in it. I also added a couple of ice packs and frozen water bottles, and then put 2" of that foam (also ahd to double up on 1" stuff) board on all 6 sides and placed that inside the shipping box. I was too cheap to pay next day shipping since it was going to be outrageous, so I did 2nd day and saved my self a ton of money, and 2 days later I was told it was still frozen solid (including water bottles) and very cold inside. That's good stuff. I'm trying to come up with mash tun designs in my head, and I may use some of that stuff.