well guys here's mine but im using freon for coolant.but thought i would show everyone something you dont ever see.my block has 4 mazes all connected .each channel is .200 x .300 with a total lengh of around 5 ft.this isnt the first but the second one i have made.works great.i was running -53f degrees with first block.very time consumming to make .8 hours non stop on a cnc.
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