Onion head

Pot still design and discussion

Onion head

Postby Youngfella » Fri Oct 26, 2018 8:11 pm

Just wondering if anyone here uses an old style onion head on top of their boiler? I was thinking about fashioning something out of an old copper meters pot :think:
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Re: Onion head

Postby Georgio » Sat Oct 27, 2018 7:30 am

I second that question Youngfella. Its something I have been contemplating myself. Would love to know if anyone has any experience. :-B
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Re: Onion head

Postby EziTasting » Sat Oct 27, 2018 11:56 am

Not experience, but I had the same ‘infatuation’ with it when I started. No disrespect intended, afterall, all the big still seem to have one - why wouldn’t I!?!?

Turns out it’s function (other than lightening your wallet) is to do a minor reflux action... so I bought a bubbler instead!
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Re: Onion head

Postby hillzabilly » Sat Oct 27, 2018 1:49 pm

I made my thumper so I could use it as a boil ball or onion head ,without plate for rum and whiskey washs,the shape is ta stop pukeing washs getting through to your plates or condencers,I used a 5gal SS keg as it had ta support the weight of the 4plate bubbler and it sits on a 18gal boiler ,and I have never had pukeing problems since .cheers hillzabilly ;-)
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Re: Onion head

Postby Youngfella » Sat Oct 27, 2018 3:33 pm

Cheers for all the replies. All the destillerys that I visited over in tassie were pretty much all bubbles accept sullivans cove I think it an onion head :think: pretty sure they were onto their second one as all the sulfides strip away the copper in the head and made it thin and wore through... thought might've been one of the positives about the onion too removing sulfides. :think:
Maybe I'll just get 2 of the copper pots and make my boiler out of it think I seen 2 for $55 on gumtree :happy-partydance:
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Joined: Tue Aug 21, 2018 4:13 pm
equipment: Copper T500
Homemade 4" potstill on 50L keg

Re: Onion head

Postby EziTasting » Sat Oct 27, 2018 9:56 pm

The copper takes care of the sulfide, whatever the shape. So the onion heads’ pupose is not specifically for the suofides!

That’s the purpose of the cool... just to clarify!
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Re: Onion head

Postby Youngfella » Sat Oct 27, 2018 11:36 pm

Yeah right, good luck with your bubbler build in any case.
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