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09/23/2018, 03:53 PM
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#1 |
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Registered Member
Join Date: Sep 2016
Posts: 69
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Bulkhead hole size.
I am about to drill my tank and I have a question on hole size. I have 1" bulkheads and the recommended hole saw size is 45mm. I have 40mm and a 50 mm saw but not a 45 mm. Has anyone drilled for a 1" bulkhead with a 50mm? Is 5mm going to make that much of a difference? Why not use the 50 mm? TIA!
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09/23/2018, 04:12 PM
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#2 |
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Registered Member
Join Date: Feb 2011
Location: Cypress, Texas
Posts: 1,904
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I'd rather have as small holes as possible behind my bulkheads. Less likely to mess something up...
Plus with amazon's cheap stuff and prime you can get something like this: https://www.amazon.com/Hotusi-Diamon...+hole+saw+45mm About $10 and no worries. |
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09/23/2018, 05:59 PM
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#3 |
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Registered Member
Join Date: Aug 2017
Location: Austin
Posts: 731
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Use the size recommended by the manufacture.
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Tank sizes, 2-10's a 55 and one that's about 500gal Current Tank Info: Interior decorating happening |
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09/23/2018, 08:46 PM
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#4 |
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Registered Member
Join Date: Sep 2003
Location: North Carolina
Posts: 18,154
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Yep..Amazon.....buy one....do it...
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Being blunt and having fun |
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09/26/2018, 05:31 PM
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#5 |
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Registered Member
Join Date: Sep 2018
Location: Clear Lake, Iowa
Posts: 26
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5mm is like 3/16". Cant really speak for plumbing through glass, but that seems like a reasonable yet slightly large oversize for a 2" hole.
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09/30/2018, 02:08 AM
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#6 |
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Registered Member
Join Date: May 2003
Location: Anaheim, CA
Posts: 6,511
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With an oversized hole your putting more load on the outer thinner edge of the bulkhead making it more likely to fail. Get the proper size drill.
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240G mixed reef, 29G SPS/LPS clam tank, 50G mixed reef Current Tank Info: 300g mixed reef, 50g cube |
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