Pot still arm/worm connection issue

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Pot still arm/worm connection issue

Postby ndrethma » Mon Sep 04, 2017 12:59 pm

Hey master distillers,

Been awhile since I was in the forum, and since running my pot still, but I did a few ujssm small batches this weekend and have an issue...on my final run I noticed condensation dripping down my copper worm as traced it back to the connection between my arm and worm (soldered 1/4" copper pipe connection bolted to arm). I used flour paste to seal it up and had no issues/leaks through the run. When I started cleaning and disassembly of my rig, the soldered connection stripped clean off my worm...:(

My question is this: is this connection (from arm to worm) something I can fit together snuggly ( without soldering a new connection) and flour paste every run, or should I solder a new connection? I haven't used the still in about two years and ran it twice prior to this over the weekend before today's failure...(I use a hot plate heating element BTW so no real danger of blow out if I happen to catch a leak and shut it down right away...)

Any help/advice would be much appreciated!
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Re: Pot still arm/worm connection issue

Postby cranky » Mon Sep 04, 2017 4:11 pm

I still use slip joints on my pot still, I wrap them with PTFE tape then slip them together, then wrap the joint with more tape. No messy flour paste and never had a leak. I've been running it 4 years that way.
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Re: Pot still arm/worm connection issue

Postby Pikey » Mon Sep 04, 2017 4:34 pm

Oatmeal, flour, water makes a good goo - run over with a torch before the run starts, it's pretty much set.
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Re: Pot still arm/worm connection issue

Postby zapata » Mon Sep 04, 2017 9:17 pm

If i picture it right sounds like the perfect place for a copper union fitting.
Though in places I do use ptfe wrapped unsoldered slip fittings, usually vertical though where gravity keeps em fixed.
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Re: Pot still arm/worm connection issue

Postby ndrethma » Sun Sep 10, 2017 6:19 pm

Thanks guys...ran it with paste only, and didn't have an issues. My last run till spring, so that will give me plenty of time to work on her:)
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