I wanted to be able to cool the water for my K40 laser if needed. If the water gets too warm, I just place a frozen 1/2 gallon of water in the bucket and it will cool it down.

Assembly is fairly straight forward. Just cut a hole in the bucket lid and drill mounting holes and bolt it together. I printed the tabs separately to reduce print time and having to use supports for all of it. I just mounted the top section into the lid and then epoxied the brackets to the corners.

I used four 150mm threaded M8 stainless rods and16 stainless M8 nuts. I also drilled holes and glued 3/8" hose barbs into the lid to connect the supply and return hoses.