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Old 09-06-2009, 07:59 PM   #1
hezagenius
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Default What drill bit size for a 1/2" brass pipe bulkhead in cooler?

My cooler doesn't have a spigot hole so I need to drill one. I have all the parts for a 1/2" bulkhead. I bought a 1/2" drill bit but this is clearly too small and I can't find the O.D. of the 1/2" brass nipple. It is a Watts A-836 1/2" x 1 1/2" brass nipple. Anyone know what size drill bit or hole cutter I need?

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Old 09-06-2009, 08:39 PM   #2
Bobby_M
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1/2" pipe is 1/2" inside diameter and 3/4" outside.

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Old 09-06-2009, 10:22 PM   #3
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I'd recommend a 3/4" step bit [Harbor Freight]:

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Old 09-07-2009, 02:39 PM   #4
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Thanks. That step bit looks like the ticket!

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