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Old 03/13/2008, 11:40 PM   #826
bleedingthought
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I put silicone between the gasket and the glass. The frange is the "male" piece of the bulkhead and the nut is the "female." You can put silicone between the the flange and the gasket too, though. It won't hurt.


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Old 03/13/2008, 11:58 PM   #827
socalchris
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Quote:
Originally posted by bleedingthought
I put silicone between the gasket and the glass. The frange is the "male" piece of the bulkhead and the nut is the "female." You can put silicone between the the flange and the gasket too, though. It won't hurt.
sweet, thanks for the help


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Old 03/14/2008, 08:11 AM   #828
hllywd
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If the outside isn't chipped and it makes you feel better insert the bulkhead so the gasket is against the better surface, inside or outside orientation doesn't normally matter as long as the flange and gasket are on the same side. If the gasket covers the chips it shouldn't be a problem either.
Bulkheads should seal fine without silicone which can cause problems (leaks) down the road if not immediately. I personally wouldn't use silicone on a bulkhead nor have I ever had one leak.

Tim


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Old 03/14/2008, 08:40 AM   #829
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I also highly recommend duct-taping the back side of the glass before you drill, this gives a little extra resistance so the backside chipping will be minimal. (just where the hole will come through)

This is standard practice in the glass industry.




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Old 04/05/2008, 09:58 AM   #830
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justonemoretank thank you for starting this thread and sharing your experience. hllywd the sunglasses and car door example made it very easy for me to figure out if it was safe for me to drill. lau was an excelent seller 38 45 &60mm with ship was $26.00. ordered on tuesday bits arrived on the next thursday friday night i had two new holes in a perfectly good fishtank. i used the duct tape on the back and ran a hose over the top. slow speed cordless and everything went fine. one tank down one to go


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Old 04/06/2008, 07:41 AM   #831
OceanSpray
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The ingenuity of the people posting in these threads is amazing. Lots of great info here. Great job!


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Old 06/05/2008, 05:49 PM   #832
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bulkhead ? schedule 80 looks better but the required hole size is 1 and 7/8 as opposed to the 1 and 3/4 its just an 1/8 of an inch difference will it work. great thread by the way!!!


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Old 06/05/2008, 08:49 PM   #833
JustOneMoreTank
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Sch 80 Bulkheads work great. You just have to make sure that you get the correct size hole (larger than "standard" bulkheads) drilled in the tank.
I see everyone is still having fun with the thread!


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Old 07/22/2008, 08:42 PM   #834
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do you use a slow drill speed?


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Old 07/22/2008, 09:40 PM   #835
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I just put 2 one inch holes in a Oceanic 37 and a few more in a couple of smaller tanks... and then a few more in some frag tanks that I'm setting up.

I suggest a practice tank if you are nervous. Buy a 10 gal from petco, they're like $11 or so. If you can drill that, you can pretty much drill anything as the glass is way thin.

I always use a higher speed with the drill, it keeps it from binding up on the glass and cracking it. I start the bit off on about a 40-45 degree angle and keep it there for about halfway through the drilling.

So far I've put a few hundred holes in tanks, no problems thus far.


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Old 07/23/2008, 12:29 PM   #836
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ok so use a high drill speed, thanks


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Old 07/23/2008, 01:10 PM   #837
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I had a problem when I was drilling my tank. The bit jumped on me as I was flattening out the angle and I put a pretty good scratch on it:





How big of a problem is this? I was planning to cut another pane of glass to cover this area and silicone it in place, then install the bulkhead over this. I'm curious to hear opinions if this is a disaster waiting to happen.


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Old 07/23/2008, 09:29 PM   #838
FrozenSurfer
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What size tank are we talking about? That looks like some decently thick glass.... How deep are the scratches?


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Old 07/23/2008, 09:36 PM   #839
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just a question i dont know if its mentioned in this thread or not but when i drill my tanks i take a piece of half inch plywood and drill a hole the same size as the diamond bit and hold the bit in place with the plywood so it cant jump around on me.

dont know if that makes sense to anyone but me but picture a hole say stencil


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Old 07/23/2008, 09:50 PM   #840
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It makes sense. Just make sure you don't use the same diamond bit to drill the wood. I tired that one time.. the bit was way dull due to the wood gumming it up. I just start the drill off on an angle, get it going then slowly straighten out the bit.


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Old 07/24/2008, 07:47 AM   #841
YeahitsK
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It's 1/4" inch thick and it's a 30 gallon oceanic tank. The scratches aren't that deep but you can definitely feel them with your fingernail.

I actually just came across this thing and wish I had used it:

http://www.bulkreefsupply.com/p227/G...duct_info.html


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Old 07/24/2008, 10:27 AM   #842
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Oh, yeah I just drilled a Oceanic 37 last night and have an Oceanic 30 at work that looks like swiss cheese. That is some thick glass. Here's my suggestion. Set the tank outside, if you can't set it outside use the bath tub. If you don't have a bath tub... well... Use a friends. Put some bulkheads in it, cap them off and fill up the tank.

Here's my $0.02. This is 1/4" glass on a 30g tank. The amount of stress put on the glass by 1/32" scratch is not nearly as much as you would think. I have a 30g Oceanic Cube as well. I have put 2 - 1" holes for drains, 2 - 3/4" holes for Closed Loop Returns and a 1 1/2" hole for a CL drain. That is way more stress than the scratches you have. These tanks are built solid. I'm pretty sure you will be just fine with the scratches.


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Old 07/24/2008, 12:17 PM   #843
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Cool, thanks for the advice. I am definitely going to do a freshwater test before I put the tank in my home full of saltwater and expensive livestock. I only have two holes on my 30 and when the overflow and return are installed it looks like it covers most of the real estate on the back wall. Yours must be quite a sight! I do love the Oceanic tanks though, it does look solid but you never know when it comes to glass. Congrats on the 37 gal-those are really hard to find as they don't make them anymore.


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Old 07/24/2008, 01:03 PM   #844
FrozenSurfer
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Make sure to post some pictures! Here's a couple of the 37 with the new holes. It took me 2 years to track this tank down. It is the last one out of the factory....




Now the waiting for the RO/DI unit to catch up begins....


Here's a link to my build thread...
http://reefcentral.com/forums/showth...3#post13013903



Last edited by FrozenSurfer; 07/24/2008 at 01:14 PM.
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Old 07/24/2008, 01:25 PM   #845
YeahitsK
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Ha, I just saw that tank over on another site I frequent. Looks great! I'm impressed with the DIY skills.


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Old 07/24/2008, 01:33 PM   #846
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lol.. you saw nothing of the sorts... yeah....


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Old 08/09/2008, 11:53 PM   #847
gimmic
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Did this tonight without a problem. Slight chipping on the inside of the glass due to flex when it was almost through.

If/Next time I will block it with wood, other than that no problem. Cheapo e-bay glass hole bit and it worked great!

I also used a larger gasket for the water container and used some putty to form a watertight seal.


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Old 10/24/2008, 05:47 PM   #848
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bump for a great thread..........8-)


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Old 07/31/2009, 09:13 PM   #849
procaelio
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I plan on drilling and installing a 1.5" bulk head in the bottom of a 40 gallon tank. I am concerned about decresing integrity of the glass. The inside of the tank will have 2 18" square ceramic tiles covering the entire of the bottom of the tank. These will be siliconed so no water gets under them. I think this will releave some of the pressure on the bottom. I also plan on supporting the underside of the tank around the bulkhead. I'm not sure just yet with what. Any suggetions other than don't do it?


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Old 08/01/2009, 01:02 AM   #850
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I've got 3-2" and 5-1" bulkheads on the bottom and no worries. Have the whole tank on a piece of high density foam (pink), would be more concerned about just trying to support the area around the bulkhead causing uneven stresses.

For drilling seen suggested stay the hole diameter away from the edges and other holes and that's how a tank building company made mine.


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