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Old 12-02-2012, 01:53 AM   #1
highgravitybacon
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Default The even cheaper cheap 5 gallon cooler mash tun

So you no doubt have gazed upon the ultra cheap 5 and 10 gallon mash tun conversion for igloo type round coolers.

http://www.homebrewtalk.com/f51/chea...version-23008/

The average cost for these items, cooler not included, runs somewhere in the area of $25. But, being a super cheap ass, I have found a way to make it even cheaper.

First you begin with a 5 gallon rubbermaid cooler. I found mine from some Australian ex-pat who was selling them on Craigslist. I paid maybe $10 for it.

Next you must remove the spigot. It has a washer on the inside of it. Remove washer. Observe size of hole. It is just a hair under 3/4". Ah ha! I said. I have a spigot I got from labelpeelers. $2.21 for it.

The spigot fits into the hole left in the side of the cooler. If you ram it in there, twisting as you go, it will poke through the other side. In most other conversions, there is a ball valve recommended. This is the most expensive part. It's like $8 or $10. So now I just saved you $6.

Since the spigot has a male 3/4" attachment, I found a brass garden hose fitting in the plumbing section of Lowes. It has a standard garden hose on one side and 1/2" brass barb on the other. $4.50.

Now, find a 12" section of stainless braided supply line. Lead free. $5 for it.

I snipped both ends off, and pushed the tubing out. Take one end and slide it over the brass barb. Zip tie in place. Take the other frayed end and fold it over on itself. Zip tie.

Done.

Total cost, exclusive of cooler, about $12.

Parts list:
Braided supply line.
Hose Thingy
Spigot

2012-12-01-20.14.51.jpg   2012-12-01-20.15.09.jpg   2012-12-01-20.15.27.jpg  
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Old 12-02-2012, 02:24 AM   #2
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Awesome project!

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Old 12-02-2012, 03:10 AM   #3
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I was building them very similar to this back in the early 90's.

MC

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Needless to say after more than a few drams my mental efficiency matched my mashing efficiency.
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Old 12-02-2012, 03:14 AM   #4
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I was building them very similar to this back in the early 90's.

MC
You were ahead of your time. If you're a year early, they call you trendy. A decade early and they call you eccentric. A century early, a heretic.
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Old 12-02-2012, 03:19 AM   #5
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You were ahead of your time. If you're a year early, they call you trendy. A decade early and they call you eccentric. A century early, a heretic.
Nah. They just call me "old".

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Old 12-02-2012, 11:22 AM   #6
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What part of kc are you in???

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Old 12-02-2012, 07:41 PM   #7
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Nah. They just call me "old".

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You gotta remember, everything is "new" to these kids....
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Old 12-03-2012, 05:17 AM   #8
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I have made version 1.1 now. It has the following accessories / modifications.

First, I drilled holes in the lid and injected expanding foam.
I removed the white rubbery washer on the inside of the cooler. You can see the one touching the brass fitting. That doesn't work. See that gap in the pictures? Yeah. So now I just screwed the brass down even tighter and it is almost flush with the wall.

Overall, the foam and related accessories have made it a slightly less crappy cheaper cheap coolertun. Checked the temp last night. 150.3F water in. 60 minutes later, 146.5F water out. Cooler was room temp prior to water addition. So fairly decent, but not outstanding, heat retention.

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Old 12-03-2012, 01:22 PM   #9
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I'll give you a little tip: Remove the handle/downspout from the spiggot, and reshape the rectangle for the output into a sideways triangle, like this: |>

This will give you better control of the flow.

MC

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