Oh no, another 2 inch pot still build.

Pot still design and discussion

Re: Oh no, another 2 inch pot still build.

Postby bluc » Thu Apr 04, 2019 7:13 pm

Still reakon thats an awesome boiler/thumper :handgestures-thumbupleft:
bluc
 
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equipment: 2" pot with 2" shotty 400mm long 5x 1/2" on a t500 boiler.
50l keg boiler 4" still mount 4" sight glass 1" drain..
4 plate 4" bubbler, 600mm packed section

Re: Oh no, another 2 inch pot still build.

Postby 78Monk » Thu Apr 04, 2019 8:46 pm

hillzabilly wrote:Ifn ya need someone for TIG welding I can rec a friend up in the Perth hills who does all mine for a good price .cheers hillzabilly ;-)


Mate I might take you up on that. Tried to solder copper to the ss ferrules today and it was a disaster. I can't imagine trying to solder my 4inch port to the keg will be any easier. Bastard of a job.
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Location: Perth, Western Australia
equipment: -Gypsy-
50l Keg boiler, 2 x 2200W elements.
2" copper pot 850mm column.
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Airstill (RETIRED)

Re: Oh no, another 2 inch pot still build.

Postby 78Monk » Tue Apr 09, 2019 7:21 pm

So I got the mongrel built.
She's not pretty but she don't leak.

Silver soldering ss to copper is a skill I must continue to master.

No pics at the moment but I'll get some soon.

Vinegar run is done ran for about 2 hours with 50/50 vinegar water. Then I washed all the parts with soap and water.

I'm about to do a sacrificial run with some peaches that I think might have been a little too far gone as the wash tastes a bit off. Gravity is still about 1000 so some booze (or more vinegar) will come out.

If it's not clean after that I have about 5/6 litres of average booze from old turbos I've stashed in the shed I'll throw that in and top up with water.

Is it normal for a copper still when it's not clean to have a copper taste to everything? No I'm not licking the column but I DD stick my finger in the water I was flushing the still with and got a destinct copper/metallic taste. This was flushing after the vinegar run.
78Monk
 
Posts: 39
Joined: Sat Feb 16, 2019 12:08 am
Location: Perth, Western Australia
equipment: -Gypsy-
50l Keg boiler, 2 x 2200W elements.
2" copper pot 850mm column.
500mm shotgun condenser.

Airstill (RETIRED)

Re: Oh no, another 2 inch pot still build.

Postby bluc » Tue Apr 09, 2019 7:26 pm

After use you will get a patina layer, it will stop this metallic taste :handgestures-thumbupleft:
bluc
 
Posts: 6378
Joined: Tue Apr 14, 2015 5:47 pm
Location: sunshine coast
equipment: 2" pot with 2" shotty 400mm long 5x 1/2" on a t500 boiler.
50l keg boiler 4" still mount 4" sight glass 1" drain..
4 plate 4" bubbler, 600mm packed section

Re: Oh no, another 2 inch pot still build.

Postby 78Monk » Tue Apr 09, 2019 7:53 pm

Cheers mate.
I couldn't work out if I was covered in copper taint from scrubbing everything in citric acid or I'd got the wrong copper or something.

Pretty excited to put my first legit run through it.
78Monk
 
Posts: 39
Joined: Sat Feb 16, 2019 12:08 am
Location: Perth, Western Australia
equipment: -Gypsy-
50l Keg boiler, 2 x 2200W elements.
2" copper pot 850mm column.
500mm shotgun condenser.

Airstill (RETIRED)

Re: Oh no, another 2 inch pot still build.

Postby bluc » Tue Apr 09, 2019 8:09 pm

:handgestures-thumbupleft: nah copper will always patina and go brown. If you polish and clear coat it will slow the proccess but not stop it..
bluc
 
Posts: 6378
Joined: Tue Apr 14, 2015 5:47 pm
Location: sunshine coast
equipment: 2" pot with 2" shotty 400mm long 5x 1/2" on a t500 boiler.
50l keg boiler 4" still mount 4" sight glass 1" drain..
4 plate 4" bubbler, 600mm packed section

Re: Oh no, another 2 inch pot still build.

Postby woodduck » Wed Apr 10, 2019 7:28 am

Good job monk :handgestures-thumbupleft: glad to hear she's a goer.

Yep ss to copper is a bit tricky. I found not heating the ss directly was the key, heat the copper and that will heat the ss. I also found I had to reapply flux during the soldering as it burns off. If the flux turns black, dab some more flux on.
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equipment: 4 plate 6" copper bubbler, 6 plate 4" glass bubbler with 500mm packed section three way thumper sitting on a 50 ltr keg boiler with 6000watts, 2" pot still and a 2" boka.

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