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Old 03-28-2011, 05:53 PM   #1
I-Hop's Avatar
Dec 2008
Lynnfield, MA
Posts: 225

I am sure this is somewhere on this forum but searched & searched and couldn't find it.

I am welding some 1/2" half couplings to my kegs to start assembling my brew rig. I have drilled 7/8" holes for the couplings. This will allow them to be welded to the outside of the keg.

Is this the right way to set this up, or should I drill holes that will allow the half couplings to sit halfway through the wall of the keg?
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Old 03-28-2011, 05:56 PM   #2
JohnnyO's Avatar
Dec 2008
Hamden, CT
Posts: 8,997
Liked 917 Times on 857 Posts

Use a 7/8" step bit, but only drill out 13/16"
Fermenting: Bohemian Pilsner, Rare Vos clone
Drinking: German Pils, IPA
On Deck: TBD

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Old 03-28-2011, 07:21 PM   #3
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Bobby_M's Avatar
Aug 2006
Whitehouse Station, NJ
Posts: 23,384
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You really want the coupling to insert into the hole rather than face-welding them. There's a good chance the interior threads would become unusable. It's best to not drill the hole until you have the coupling in your hands. The OD varies wildly between 1" and 1.25".
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