Cutting 50mm hole through Glass?????

Discussion in 'Anything DIY Related' started by Pugsly, 4 Aug 2009.

  1. Pugsly

    Pugsly

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    Hi guys - I want/need to cut an additional 50mm hole though the one glass side panel of my sump to add and extra overflow. How can I do this? Besides the actual drill what bit does one get and can one get it from builders w/h?
     
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  3. Sentari

    Sentari

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    Diamond tip drill. Slowly drilling. with water poring over it to make sure the bit doesnt get too hot. Thats what ive heard. I havent done it myself.
     
  4. lanzo

    lanzo Sponsor

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    Sentari said it

    diamond drill bit- alert steel sell them

    drill very very slowly and constantly add water while you drill...it will take a couple of minute to get threw the glass( its not like drilling a whole in a whole or would..it will probably take you 15min or even longer depending on the glass thickness)

    have fun...its very very easy ;)
     
  5. Sentari

    Sentari

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    Also what size glass are you drilling? is it also float glass?
     
  6. RiaanP

    RiaanP Moderator

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    what? whole in a whole? how do you do that...:)
     
  7. ben lloyd

    ben lloyd

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    :phahahahah with a see through brill bit.
     
  8. mariusmeyer

    mariusmeyer

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    The bits are somewhat expensive . I paid R240 for mine from mega mica and I know the builders close by was around the same.
     
  9. lanzo

    lanzo Sponsor

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    :lol::lol: whole in a wall or wood:lol::lol::lol:

    oops:p
     
  10. lanzo

    lanzo Sponsor

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    i paid between 60 - 150 for my drill bits
     
  11. inflames

    inflames

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    Try find a LFS that can drill it for you. I had mine drilled for R100 at a LFS. Better than spending R250 for a bit. The Diamond drill bit also has limited life span! Save yourself the extra cash and just get the one hole drilled, unless you wanna start up a sideline business!;)
     
  12. leslie hempel

    leslie hempel Moderator MASA Contributor

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    dril pricesl range according to size of hole you wanting to drill.. i pd R150 for a 32mm bit.. but i have since seen them cheaper at D&A timbers and they are now kept on the shelf.. its pretty easy, getting a start is the hardest part and then just apply slow even pressure occasionally lifting the drill bit to allow water to rush in and cool the area being drilled. takes approx 1 minute per millimeter
     
  13. Pugsly

    Pugsly Thread Starter

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    the trick here is that I am going to drill my sump - add an extra hole for water to flow through - this has to be done online!!!! just going to drop the water level and then drill. going to take it really easy and not put to much pressure onto it. Got a 50mm diamond tip from biulders.

    My plan is to drill a little, let everything cool, drill some more, and cool etc till a get through and hopefully it won't crack or break anything.
     
  14. Sentari

    Sentari

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    2lt coke bottle with a hole in the top and a helper to keep pouring the water works well! :)
     
  15. leslie hempel

    leslie hempel Moderator MASA Contributor

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    dude without water to cool it it will hook and crack..
     
  16. GregB

    GregB

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    Hi Dudes.
    Lesley is right.
    No water to cool the glass will result in uneven localised heating which will definately result in a broken piece of glass.
    To get an acurate hole, take some spare glass, 6mm min, and practice on same.
    Use 6mm holed glass as template and clamp lightly into position where hole is required.
    Add tons of water, in your case, sea water, and drill as slowly as possible. New bits tend to bite and the template is an invaluable aid.

    Comment: drilling glass results in glass powder and on "breakthrough, fine shards of glass. Use wet & dry vacuum on drill side and catch shards on reverse side with a towel or similair.

    Glass powder will be inert but will act as an effective abrasive in pumps, etc.
    Regards
     
  17. vzyla

    vzyla

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    I drilled a few tanks before. You are welcome to borrow my 50mm bit. Yes i agree, use a template and lots of water
     
  18. Neil H

    Neil H Moderator MASA Contributor

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    use a template .... it will help a lot .... oh and put the least amount of pressure you can ...... you are gently grinding the glass, not cutting it !
     
  19. Pugsly

    Pugsly Thread Starter

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    Just a quick update - I drilled the 50mm hole without any problems. I took my time and did it very slowly. Took me about 45 minutes to complete but because I did it online I went really slow with nearly no pressure while drilling. It is done perfect, and the plumbing is complete and all is up and running 100%:)

    Got all the equipment from builders and it worked better than expected!

    Thanks for the input guys
     
  20. Neil H

    Neil H Moderator MASA Contributor

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    good to hear that it went well !
     
  21. riyadhessa

    riyadhessa

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    Pugsly...thats great...:thumbup:
     
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