Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > What size hole saw to use on a SS kettle when adding a weldless kit?
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Old 03-10-2012, 02:56 AM   #1
rhodesie9
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Default What size hole saw to use on a SS kettle when adding a weldless kit?

Does anyone have any feedback as to which size hole saw to use for adding a weldless kit? I have seen both 7/8 and 13/16 recommended and I am not sure which one to use. Worried about ruining my first brew pot.


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Old 03-10-2012, 03:00 AM   #2
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I used a step drill thats widest step was 7/8".


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Old 03-10-2012, 03:08 AM   #3
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I don't remember the exact size but do remember going through the same dilemma. I think I just measured the width of the shank. Don't hold me to it but seems like it was 7/8".
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Old 03-10-2012, 03:15 AM   #4
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Harbor freight has a step drill set for 20 bucks. Worked pretty good for me.
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Old 03-10-2012, 02:47 PM   #5
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13/16" is super tight. Like it will try to pull off your teflon tape tight. 7/8" gives you a bit more wiggle room.

I did all my holes at 13/16" and had to be real careful to not shred my tape installing everything.
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Old 03-10-2012, 02:51 PM   #6
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I'm not sure if you're drilling SS or aluminum, but for my aluminum pots I drilled a little small, then filed to fit so I wouldn't end up with a gaping hole.

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Old 03-10-2012, 02:56 PM   #7
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All the ones I've seen are 7/8 including mine and with the weldless kit there is no need for tape, there is a heat proof gasket on the flange that seals up tight upon first use. If your kettle is SS be very careful and take your time as it's very tough stuff, also use a little cool water as you drill to keep the bit cool. If you have access to a drill press I'd recommend using one.
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Old 03-10-2012, 11:18 PM   #8
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My kettle is SS. I'm going to give the 7/8 a try.

Thank you all for your feedback. Much appreciated!
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Old 03-10-2012, 11:51 PM   #9
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A hole saw is going to walk a bit so it would be better to use 13/16 as it will end up at 7/8" after cleaning it up a bit.
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Old 03-11-2012, 04:19 PM   #10
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Is there any reason you couldn't use a 7/8 or 13/16 drill bit instead of the step bit?


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