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Old 11-16-2012, 10:37 AM   #11
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But then how would you deal with heat loss due to having no cover?
with the right outside pot, I think you could make an insulated lid to fit down inside and cover the inner pot.

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I know the some of the expanding foams release formaldehyde when heated too so you may want to take that into account
Thanks for the info, I wasn't aware of the formalehyde thing with expanding foam, definately don't want that.


I did make a bare bones control panel for the one vessel I have done, our homebrew club is having a group brew tomorrow, and I wanted to be able to try it out. I am planning to do a mini brew in a bag Rye Wine. If this works out like I hope, I can take my time to figure out the mini mash tun.

I really like the fact that I can keep the precision temperature control of electric, and still be able to haul it over to a buddies house to brew without worrying about access to 220v.
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Old 11-29-2012, 02:47 AM   #12
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Have been working some more on this, have the control panel about 85% done, just waiting on some parts from Auber to finish it up. The enclosure is from an old Pace desoldering station I had in the basement. The 2 empty holes will be for the RTD connectors.



Also been working on the mini mash tun, it is a 2 gallon pot inside of a percolator coffee pot. The coffee pot temp will be controlled by one of the auber controllers. Waiting on some parts for this as well.



Will try to get some pics of the complete setup when the rest of my parts arrive.

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Old 11-29-2012, 04:11 AM   #13
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I'm not exactly sure I know how a coffee percolator works. can you explain it? and also do you have a drain valve for the mash tun?

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Old 11-29-2012, 11:57 AM   #14
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I'm not exactly sure I know how a coffee percolator works. can you explain it? and also do you have a drain valve for the mash tun?
It is basically a pot with 2 built in electric elements. When you plug it in the larger element begins heating water which if you use all of the parts of the coffeepot pushes steam up through a tube which then condenses and runs back through the coffee filter at the top. When the liquid gets to the correct temperature, a bi metal disk thermostat clicks over and the high wattage element turns off and a lower power warming element turns on. I am not using the tube or the filter basket so I will have a high power element to heat up the water surrounding the mash tun, and will replace the metal disk thermostat with a switch. When it gets to the temp I need, I will flip the switch and let the auber contoller maintain the temp with the warming element.

As for a drain, I am working on that, the plan is to have it bottom drain from the stainless pan through a silicone tube and out the original spout on the bottom side of the coffee pot. I am still considering manifold design vs custom tiny false bottom.
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Old 12-01-2012, 11:09 PM   #15
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Made some more progress. I can control HLT and MT temp using the control panel in the pic.

I think all that is left is:

- Build a manifold for the mash tun and plumbing it out
- Finish PWM for boil kettle(waiting on parts)
- Make some sort of brewstand for this (thinking 3 tier, can't see the need for pumps on a 1 gallon system.)
- Possibly add drain on boil kettle and HLT, but it is almost easier to just pour them


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Old 12-04-2012, 10:26 PM   #16
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Do you mind telling me where you got the pots on eBay? I'd love to do the same soon.

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Old 12-04-2012, 11:39 PM   #17
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I got them from this thread, but all have been sold.

2 gallon pots

Haven't looked for any others, so not sure how often these come up.

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Old 12-05-2012, 11:17 AM   #18
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I wen on Walmarts website and around here they are selling an 8 qt stock pot for $6.97 each. Is it gonna kill me?

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Old 12-05-2012, 10:17 PM   #19
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I wen on Walmarts website and around here they are selling an 8 qt stock pot for $6.97 each. Is it gonna kill me?
I would assume for that price it is aluminum. Lots of folks on here brewing in aluminum. It will work just fine. Before brewing in them you should boil water in them to create that darker aluminum oxide layer and avoid certain cleaners. You should be able to search on here for "cleaning aluminum" and find out what people are using safely.
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Old 12-06-2012, 04:32 PM   #20
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They claim it's stainless.

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