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Drilling a tank

Discussion in 'DIY (Do-It-Yourself) Projects' started by Irishman, Nov 14, 2016.

  1. Irishman

    Irishman Prawn M.A.S.C Club Member

    Anyone have a glass hole saw they can let me borrow/show/teach me on drilling a hole in a tank? Possibly a LFS that does it as well if no one has one?


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  2. CRW Reef

    CRW Reef Orca Staff Member M.A.S.C. B.O.D. M.A.S.C Club Member

    If you order a bit from BRS or Amazon, i can drill the tank for you at the show this weekend if youre attending
     
  3. Irishman

    Irishman Prawn M.A.S.C Club Member

    I'll try to attend. It's my daughters birthday so depends when the wife wants to celebrate it


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  4. neil82

    neil82 Prawn M.A.S.C Club Member

    What size hole do you need?
     
  5. Irishman

    Irishman Prawn M.A.S.C Club Member

    2 1/2"


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  6. neil82

    neil82 Prawn M.A.S.C Club Member

    I can help you out too. I believe the glass hole saw is 60 mm which will work for 1.5 inch ABS bulkhead if that's what your doing.
     
  7. Texco

    Texco Copepod

    If I only have access to a 1 inch hole saw, and my overflow is 1", but my return is 3/4", do they make a reducer or coupler to be able to use the 1 inch hole but with 3/4 inch line? Would this create an air gap or pose issues?
     
  8. Irishman

    Irishman Prawn M.A.S.C Club Member

    The bulk head that's with the overflow box measures 2 1/4" from thread to thread


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  9. fishguy69

    fishguy69 Barracuda M.A.S.C Club Member

    Sounds like a 1.5" bulkhead
     
  10. neil82

    neil82 Prawn M.A.S.C Club Member

    I thinks that's a 1.5 inch bulkhead. Here are a few pics of mine for reference.
     
  11. neil82

    neil82 Prawn M.A.S.C Club Member

    I have a 35mm bit which will fit a 3/4 inch bulkhead if anyone attending the meeting this weekend would like to use it.
     
    Texco likes this.
  12. neil82

    neil82 Prawn M.A.S.C Club Member

    Not sure if you could get away with that. But I think I have the size you need. See post above.
     
    Texco likes this.
  13. Irishman

    Irishman Prawn M.A.S.C Club Member

    Your right Neil82, will you be attending the meeting on Saturday?


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  14. neil82

    neil82 Prawn M.A.S.C Club Member

    Yes, I am. I will pm you my cell number to coordinate.
     
  15. Texco

    Texco Copepod

    Neil82 do you have a 3/4" and a 1" saw bit? I am not able to make it tomororw but could I pay you to drill my tank?
     
  16. neil82

    neil82 Prawn M.A.S.C Club Member

    I can help you out with hole for 3/4 inch or 1.5 inch bulkhead.
     
  17. CRW Reef

    CRW Reef Orca Staff Member M.A.S.C. B.O.D. M.A.S.C Club Member

    Thanks for the tools Neil! The drill went smooth and easy!
     
  18. Texco

    Texco Copepod

    I ordered a 3/4" and a 1" bulkhead sized drill bit from glass-holes. Any tips or suggestions from those that have drilled before? Someone that has done it would you potentially want to help me do it or am I telling myself it is harder then it is?
     
  19. Irishman

    Irishman Prawn M.A.S.C Club Member

    I witnessed CRW do it on my tank and I could help you out


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    Texco likes this.
  20. TheRealChrisBrown

    TheRealChrisBrown Barracuda M.A.S.C Club Member

    I take the bulkhead and a sharpie and mark exactly where I want the bulkhead to be. If you are putting it near the plastic trim pieces of the tank make sure you account for the flange of the bulkhead. Then get a good blob of plumbers putty and build a dam around your soon to be hole, this will keep water on the bit to cool it. Then I start with the drill at a 45 degree angle, aligning the bottom curve of the bit to the sharpie traced location on the glass. Start drilling slow until you have a good start and then begin to slowly rock the bit into an upright position. Once you have the bit making full contact use minimal pressure and let the bit do the work. The less you press down on the drill the less chance you have of cracking the glass. Easy does it. When you are getting close to drilling all the way through you'l see water going through the cut. Make sure you place a towel under your work to catch the falling piece of glass! That would really suck if it fell through and cracked the other side! If you press too hard at the finish you can actually break off the edges of the glass, this will result in a potentially bad connection with the bulkhead, so go super slow.

    It seems intimidating, but it is pretty easy once you have done it before. Take your time, lay it all out and triple check your hole locations, and you should be good to go. If you want to drive up to Loveland I am more than willing to help you out if you need it!
     
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