Here's a progress shot of the fermentation chamber that I'm building. "Why don't you just use a chest freezer?" A couple of reasons. The entire cost for this build will be under $100 for which new chest freezers are small, and used freezers are, well, used. If it dies, I have to replace the whole thing. My build is chilled by a mini fridge setup basically like a window unit for a small, well insulated room. If/when the fridge kicks the bucket, I can replace it for another more cheaply than replacing a chest freezer.
The box will hold a giant rubbermaid full of sanitizer. The fermentors will sit in that water bath with an aquarium heater and pump for circulation wired with the fridge to an STC-1000. I still need to insulate and cut the lid to size, but I'm almost there. We got an early heat wave here in NC so brewing has stopped. This will help me brew year-round in any style.