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Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns, & Hot Liquor Tanks > Hole size
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Old 03-26-2009, 04:58 PM   #1
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Default Hole size

I am about to get a 1/2" coupling welded to my keg. What size hole did everyone drill? I think that the couplers are 1-1/16" OD.

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Old 03-26-2009, 05:01 PM   #2
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Don't try to guess. Get your couplings and measure them exactly. You want a snug fit.
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Old 03-26-2009, 05:05 PM   #3
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Don't try to guess. Get your couplings and measure them exactly. You want a snug fit.

Great advice. If everyone here is using a coupler that takes a 1 1/16" hole and there's another one out there that only takes a 1" hole. Your 1 1/16" couplers will shrink in transit the second you drill that hole. My friend Murphy told me that....
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Old 03-26-2009, 06:22 PM   #4
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Get a digital caliper too. Harbor Freight sells them for cheap if you don't have much cash. That'll give you an exact size if you can't determining the fitting's dimensions from a diagram.
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Old 03-26-2009, 07:06 PM   #5
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I have some calipers but they're analog and I actually have to do some figurin to read the darn thing.
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Old 03-26-2009, 07:33 PM   #6
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I have some calipers but they're analog and I actually have to do some figurin to read the darn thing.
Yeah, but then you don't have the world's weakest clamp when the batteries die.
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Old 03-26-2009, 08:03 PM   #7
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Thanks all!

I ended up going to the welder and getting the piece. On a rough estimate(no calipers here), it is just over an inch. He said he would prefer the hole to be on the small side and he can adjust it more precisely. Great to meet such a nice guy. he is going to charge 15-25 per keg depending how long it takes his guys to do it. Oh, and he let me bring home the couplings for free!!
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