There is really not much to see Bob. That is the beauty of simplicity.
Plastic container, I used a square type with a clip on lid.
Submersible pump. Although at present I am using a coolant pump I had spare off a machine. Good quality aquarium pump is my first choice.
Pump is switched via Mach3 with the spindle speed control. SSR.
1/4" plastic tubing run through the cable management system (cable chain).
It is cheap, easily obtainable and replaced in a few minutes if it goes a little stiff with age.
Need to remember that very little flow is actually required. A smarter man than me worked out the following,
"If your water flow fills a beer glass in a whole minute, the water temp will not rise more than 20C [36F] while cooling a 3kW [5HP] spindle that is
only 80% efficient and running under full load."
Mine is 700ml/min. 24 fl/oz.
Greg