Even having a tubing cutter, torch, etc. it isn't necessarily that much cheaper to build depending on what you do.
I think the industral grade hose connections I used increased total cost by about 1/4, maybe more.
Took my last batch from flame out to 60F in 15, give or take. Didn't time all that carefully.
Oh, yeah, I built an anti-gravity machine too.
Like I said, $$$ was the goal here. 20 bucks of copper, wrapped around a tall thin pot from my ice cream maker, bent by hand. It started to crimp a little in one spot, but I ran water through it and it seems to flow really nicely. After adding the rubber hose, clamps, and an awesome adapter that screws directly to my kitchen sink (our water gets super cold....and also super hot. I measured 140 when I was washing my thermometer the other day), I came in at about 26 bucks. And Lowe's is right down the street! It ain't purdy... but I'm making a Mock-bock on Friday, so I'll let ya know how well it actually works
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