This is a bit of a fun behind the scenes look at a suuuper junky watercooler I put together with hardware store parts, for the ender 3 hot end. I'll build a proper one soon, but I thought you should share in my amusement, and to get a better idea of the BARE MINIMUM. the pump I am using is AD010-1208D, which cost me like $3 or so, but I'll list a better pump below (it is a bit noisier at higher voltages, but still pretty quiet if you suspend it in the water tank rather than mounting it to the side where it can vibrate). I'll do more detailed testing for WHATEVER the final result becomes (IR thermal pics, thermistor down the heatbrake, etc).

TIME INDEX:
0:10 Intro
2:35 Background
7:45 water-cooling basics
8:53 cooling block design
11:14 tube bending
14:55 connecting the tubing
16:34 res and cooler
17:34 pump
19:24 noise comparison

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24v water pump https://amzn.to/2SQYzqH
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