I decided to upgrade my previous method of cooking sous vide. When I saw these plans for a DIY immersion circulator I was sold. After an Amazon shopping spree, I started assembling the stuff. I borrowed a Dremel (thanks Josh!) to cut the acrylic for the casing and did a dry fit before I started gluing anything:
I then glued in the heating elements and wired the thing up. It works!
But, you'll notice a few things (serves me right for not applying enough critical thinking when reading the plans). First of all, there are wires hanging out the back. There's also a heat sink (metal fanlike structure) hanging out on top, attached to the SSR. The reason is because there's not enough space in the box to fit everything. Oops.
Furthermore, the way the heating elements are set up, I need to fill the bin way up with water or the elements will not be submerged and burn out. And, that's 120V stuff, exposed, directly above water. This isn't a good idea.
So, my plans for Version 2 of this is to put the control portion of the device in a separate container and run the heating coils and temperature probe separately. I'm going with the case from an old PC power supply (cooling fan included, for the SSR). Stay tuned for future updates.