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Drilling my tank for overflows and closed loop.


Hog Head
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I was going to use my cordless to drill my tank but the lfs said to use one of these http://beckerindustries1.com/BM3_Tripod_Drill_Press_lg.html . Said that by hand I would get alot of chip out, hole wouldn't be straight , bulkheads wouldn't seal, etc, etc...

 

Problem is they are close to $600. If I was going to drill alot of tanks it would be worth it but I don't plan on doing that.

 

So what does everyone who drills their tanks around here do?

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I have hand drilled them a few times. Just go slow and take your time. Make sure to put clay in a circle around the hole. Then fill with water(the clay ring). And change it often(the water). Remember the thicker the glass the more forgiving. Happy Drilling

 

It is half inch glass.

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You should have no problems. Make sure your bit is sharp. just let the bit do the work not extreme pressure.

 

I am going to use a glass-holes kit so the bit will be new. I have 3/8" cordless and 1/2" corded drills. Is the cordless the better choice?

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Put masking tape on the inside of the tank so the glass dont drop out i drilled one tank with out the tape on the inside and it cracked the entire side. the 2nd tank i put tape on it and it worked fine had a little chiping but bulk heads sealed fine. I used a cordless drill just go slow and run water on the bit all the time while drilling.

I allways put silacone on the gasset of my bulk heads just for added insurance.

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Put masking tape on the inside of the tank so the glass dont drop out i drilled one tank with out the tape on the inside and it cracked the entire side. the 2nd tank i put tape on it and it worked fine had a little chiping but bulk heads sealed fine. I used a cordless drill just go slow and run water on the bit all the time while drilling.

I allways put silacone on the gasset of my bulk heads just for added insurance.

 

Tape sounds like a good idea. I was going to clamp a peice of wood to the inside of the tank to try to eliminate/lessen chipout.

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I would use the corded drill as to keep the speed more constant. It will take quite a bit of time to make the hole. I never used the tape before just a beach towel folded up to catch the glass piece but masking take would not hurt either.

 

The 1/2" drill has a fairly slow rpm so that shouldn't be a problem.

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I have a 40 gal that has a crack through one side if you want to practice drilling holes . you could come get it

 

I appreciate the offer, but with premium and diesel at $4 a gallon I think I can buy one locally or new for a practice tank.

 

Thanks again, Eugene

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