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Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns, & Hot Liquor Tanks > 2 Gal PM Mash Tun Build - Cheap
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Old 05-28-2010, 03:24 PM   #1
TheHalfDime
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Default 2 Gal PM Mash Tun Build - Cheap

So, I am new to the forum and have been brewing for about 8 months and felt it was time to contribute. I read a very extensive thread from '06 that was focused on the PM brewer and options for a space efficient/inexpensive mash tun. With inspiration and grain in hand I set off to Lowes/Home Depot for parts. Here is the quick run down:

Goal:
Build a 2-3gal mash tun for partial mash that had fixed brass or copper fittings through the cooler. Ideally for less than $35.00 total. (There are a few links within past threads that show a drilled rubber stopper and copper stem being used as a bulkhead, but I didnt want to worry about knocking it loose)


Lowes
Cooler - Rubbermaid 2 Gal. (Cylindrical) Lowes - $9.74
SS Mesh hose for sink - $3.74

Home Depot
Brass Body Globe Valve - ~$7.00
1/2" Male to 1/2" Barb - ~$2.00
1/2" Close - ~$2.00
1/2" PEX converter ~$1.80

LHBS
1/2" Sillicon O-Ring - 2@0.49
* The o-rings are perfect, but the first thought while in Home Depot was to use a toilet tank gasket and cut out the middle to slip over the 1/2" close fitting. I didnt end up doing this, so check out the material before you make some wort.


The bulkhead could probably use a washer or two to stop the rotation of the valve and a better seal against the o-ring, but it does seal as it is. I have it setting on my counter to give it a time test. I was a little reluctant to use Zinc coated washers, any thoughts?


Overall, ~$27.00 + Tax and you are good to go.

Cheers
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Old 05-28-2010, 03:41 PM   #2
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You should have just went all grain already

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Old 05-28-2010, 04:31 PM   #3
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Default No Space

I live in a house with no garage yet.

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Old 05-28-2010, 04:51 PM   #4
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Hey Half Dime, how big are your batches? I live in a trailer and brew AG 2.5 gal batches. Have done this for years. I can understand space is an issue, but there are ways.

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Old 05-28-2010, 04:56 PM   #5
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Also, keep an eye on that MLT when you put heated water in it. Sometimes those "cheaper" coolers can warp or separate. I found a 3 gal Igloo at my local grocery store a couple years ago for $10.

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Primary: Apple Honey Cyser
Secondary:
Secondary: Apfelwein
Bottled: Broken Arrow Bitters (got a case and a 1/2 gal)
Drinking: Grolsch
Up Next: SMaSH ESB of my own creation
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Old 05-28-2010, 05:05 PM   #6
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I am doing 5gal batches, but honestly at 5 batches done and number 6 in the secondary, I am comfortable with PM. There is plenty to explore for now. I know it is not a big just to go AG, but Rome was not built in a day. My future vision has a dedicated space in my future garage for a 10gal batch AG system. Currently, I have all my stuff crammed into a cabinet in my living room.

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Old 05-28-2010, 05:13 PM   #7
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Quote:
Originally Posted by TheHalfDime View Post
I was a little reluctant to use Zinc coated washers, any thoughts?
Zinc on the outside (not touching food) = fine
Zinc on the inside = bad

Apparently there is some leaching possible when the wort touches zinc.
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Old 05-28-2010, 05:22 PM   #8
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Quote:
Originally Posted by JayInJersey View Post
Zinc on the outside (not touching food) = fine
Zinc on the inside = bad

Apparently there is some leaching possible when the wort touches zinc.
+1 Brass or SS is the good stuff. Look at Lowes or HD for SS fender washers.

Lucky for me I live alone. I brew the smaller batches so I don't have to worry about storage of product and I like brewing often to have a variety on hand. But I can shift to 5 gal in a blink of an eye. I'm just having too much fun right now. I've got three 3 gal carboys now and am picking up four 2 1/2 gal 'boys Tuesday to give me some depth in my rotation.

Good luck.
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Asgard Brewery
Ales to the Gods

Don't worry about life, you're not going to survive it anyway.


Primary: Apple Honey Cyser
Secondary:
Secondary: Apfelwein
Bottled: Broken Arrow Bitters (got a case and a 1/2 gal)
Drinking: Grolsch
Up Next: SMaSH ESB of my own creation
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