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Old 08-18-2007, 02:50 PM   #1
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Default Correct step bit for drilling brewpot?

So I got the "Weld less fitting to convert a keg, kettle, or pot." from great bargains, and it has a 1/2" Stainless nipple.
http://www.greatbargain.net/order/shop1.html -- second one on the page.

What size step bit do I need? I measured with a ruler and it looks like I'd need 3/4" hole to fit this nipple through...1/2" must be the inner diameter??

I'd like to drill my brewpot today or tomorrow so I can finally start going All grain.

(yes, I'm mechanically retarded)

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Old 08-18-2007, 03:05 PM   #2
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You want a 7/8ths inch hole.

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Old 08-18-2007, 03:10 PM   #3
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cool, I appreciate the help!

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Old 08-18-2007, 03:18 PM   #4
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Don't necessarily discount a bi-metal hole saw. The step bit is nice, but expensive. If you don't think you'll use it a lot, just get a hole-saw and arbor. I've drilled a SS kettle and keg with no problems.

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Old 08-18-2007, 03:25 PM   #5
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Just make sure it IS a bi-metal holesaw. If you get one of the cheap ones you will chew through the saw, not the pot.

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Old 08-18-2007, 03:33 PM   #6
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ouch....they wanted almost $40 for a step bit that I'll only use once, or twice. I went with a 7/8" bi-metal hole saw instead for half the cost, as another thread said that'd work fine too.

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Old 08-18-2007, 03:39 PM   #7
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Check what's available. Ideally, you want to drill the smallest possible hole that will clear that nipple with your gear. I'd test drill into wood or plastic to be sure the hole you are going to drill is what you want.

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Old 08-18-2007, 03:51 PM   #8
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thanks mr x, i'll do that, although luckily this brewpot was free, and not that high a quality, so if I messed it up I at least won't be out a wad of cash

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Old 08-19-2007, 02:47 AM   #9
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I've found that a bimetal hole saw actually makes a hole about 1/8th inch larger than than the listed size. At least, that's when happened to me.

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Old 08-19-2007, 05:58 PM   #10
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You're right bobby...the 7/8" hole seems too large, and I'm leaking. I guess 3/4" and maybe a little Dremel would've been better.

Gotta see if I can make this work. The pot is too thinly walled...its trying to flex as I open and close the ball valve. At this point I just want it sealing so I can at least make this a HLT.

whew...I think I have the leak problem fixed. testing now...

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