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  1. #1
    Senior Member barry_c's Avatar
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    Drilled my first hole

    Well, it's finally done. i've drilled my first hole in my new 30 gal high refugium to be. Here's the process using my dremel.

    1. bought a roto zip bit, used for cutting tiles etc.
    2. used the gasket on the 3/4 bulkhead to mark a circle on the glass.
    3. turned the speed down to 500 rmp on the dremel and drilled a hole through the glass.
    4. started to cut the glass by using an up and down movement with the dremel.

    During this process, a continuous stream of water was applied from a squeeze bottle. just enough to keep the surface and the bit wet. this also helped in keeping the dust/chips from flying around.

    the whole process took 10 minutes, including messing around trying to figure out what i was doing.

    You should ensure that the bit is very secure in the dremel, if it is loose at all it will start to wobble in the chuck.

    Next setp, drill my 90 gallon for 2" bulkheads and a closed loop!! i'll keep you posted and try to get some pics.

    Barry

  2. #2
    AC Partner MomRules's Avatar
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    You're a brave man , Barry! Way to go!
    Gail in Nova Scotia

  3. #3
    ijo
    ijo is offline
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    hehe.. your crazy... good job though!!! a 30 was a good idea to run the test... hope everything goes well with the 90.. keep us updated... ohh and pictures would help also.

    IJO

  4. #4
    Senior Member BIGGUNSAR's Avatar
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    way to go

    sounds scary.

  5. #5
    Senior Member barry_c's Avatar
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    it was scary at first, but once the bit went through, it wasn't so bad. i do have a mild case of the jitters thinking about putting four holes in my 90 gallon. gives me the willies. i think i'll use gail's prayer, "please don't crack, please don't crack"
    Barry

    Patience is a virtue.

  6. #6
    Senior Member AndrewNS's Avatar
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    Why did you choose the roto zip type bit instead of a diamond glass cutting bit?

    Andrew

  7. #7
    Senior Member barry_c's Avatar
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    i actually bought both. i tried the diamond tipped bit first (#7134) and it seemed to start the first hole ok, but then it wore out. i didn't even get through the glass with it. i had seen on a thread on RC where someone used the rotozip bit, so i decided to try it. it caused more chipping along the edge, but it isn't even noticable unless you get right up to the glass.
    Barry

    Patience is a virtue.

  8. #8
    Senior Member AndrewNS's Avatar
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    What kind of GPH are you looking for with 2X2" bulheads?
    and
    What kind of return pump?

    Andrew

  9. #9
    Senior Member barry_c's Avatar
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    i'm shoting for a Mag 18 for a return to the main tank and my above tank refugium. it will have around 5 or 6 feet of head, bringing the GPH down to around 1400, and diverting around 200 gph to the fuge. the 2 x 2" standpipes will give me lots of capacity incase i want to go with more flow.
    Barry

    Patience is a virtue.

  10. #10
    Senior Member AndrewNS's Avatar
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    Mar 2003
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    You are moving along fast with the tank setup. Have you decided on lighting yet?

    Andrew

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