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Cutting a hole in top of my case.

post #1 of 12
Thread Starter 
So I'm going to put the rad on top of the case and I need to drill 2 holes plus 1 for the filler port. I bought a 1" Bi-Metal drill bit, but I think this is going to move around a bit. Any suggestions on keeping the bit in place while trying to start the hole?

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post #2 of 12
1'' bit is gigantic, i normally use holesaws.

i would centerpunch it (with a piece of wood under it to make sure i didnt bend the panel) and probably put a small (1/8ish) hole in it first, almost like a pilot hole. i would then mount a piece of wood on the underside of the pannel so that the drill will stay straight
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post #3 of 12
start with a smaller drill bit. then go larger the bit doesn't moving around
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post #4 of 12
I just use a 4.5" hole saw to make holes for 120mm fans. I use a 1/2" bit to set my starter hole, then use the lead bit from the hole saw to get started. I also use WD40 on the top of the metal and on the hole saw itself, it helps from slipping and binding.
post #5 of 12
The center punch is right. Also put some blue painters tape, covering the entire top. Also when drilling, After taping, get a really sharp nail. Then slowly drill a very small hole with really small drill bit in the middle of the dent that you made with the nail. Then after that use the drill bit that is right for the holes. Go Slow. Its just time.
    
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post #6 of 12
he's trying to make a hole for the fillport not 120mm fans.
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post #7 of 12
Thread Starter 
The bit is the type you would use for a door to cut a hole for the latch.
I was going to buy an actual 1" drill bit, but the bit was $50 and the one I bought was only $18. I might have to walk over to the mall and see what they have there.
Stupid buses in my area are on strike.
And I'm using 3/4 OD tubing, plus a little extra room for the hose clamp.
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post #8 of 12
Use a dremel and cut it out..

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post #9 of 12
cover it in tape, and use a center punch. if you dont have one, use a nail and hammer. remove tape and voila! proceed to drill.

When i cut a hole, i used a jigsaw instead of the holesaw... i started the hole with a holesaw, it was taking a ridiculous amount of time... i pulled out the jigsaw and cut the hole in like 2 mins.
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by nafljhy View Post
he's trying to make a hole for the fillport not 120mm fans.
For the fillport and also 2 holes for the rad barbs and tubing.
I do ahve a dremel tool, but not sure if I have the right bit, plus I want to cut a nice round hole.
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