Simple glass tank drilling question...

[20 20]

I know the answer is in these forums already, but I've looked, and can't find it. So, I'm going to be drilling two holes for 1" bulkheads in the side of a 16 gallon Perfecto tank. How close to the upper edge of the tank can I place the holes?

 

[jaze36]

The same distance as the diameter of the drill bit, so if you have to drill a 1 1/2" hole no closer than 1 1/2".

 

[Stipe]

Ok since this is a drilling question, i got one,

I want to drill a certain sized hole in my sump. To do this requiredmy to take my sump to my LSF or any other glass place. Im sick of this and want to do it at hole (my dads a carenter, i can get ahold of anything i want). So what do i need to drill it. I know he has those circle drill bits for drilling big holes in wood but what could drill the glass. If i dont have it i can certinly buy it. Do i need any special machine, i got cordless drills, big drills, concrete drills etc you name it.

what do i need?

 

[wiley0717]

Diamond bit, cordless drill (2 speed is easier to work with) and some scrap glass to practice your first couple holes.

 

[Stipe]

ok, im off down to bunnying to find a diamond bit. Thankyou

 

[20 20]

Buy the bit off of eBay, I did. Much cheaper that way:

http://stores.ebay.com/THK-Diamond-Tools

The bits probably won't last as long as one you buy here in the States for a lot more money, but I only need to drill 1 or 2 holes, so they work fine for that. Here's the last one I bought:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rd=1&item=180004348737&ssPageName=STRK:MEWN:IT&ih=008

It's a 42mm bit to drill holes for a couple of 1.5" bulkheads. $9.20 to my door ($5.20 for the bit, $4.00 for shipping), came in less than a week.

 

[20 20]

Oh, and thanks for the replies, 1.5" it is!

 

[wiley0717]

got mine from the same place as 20 20 and pretty happy with it. You will probably only get about 10 holes out of it but even at that at a cost of about a buck a hole you are still way ahead of the game as far as equity goes!

 

[20 20]

I only needed it for two holes, worked fine. Inexpensive way to drill your own holes, if you don't need many.

 

[hangles]

Also pick yourself up some plummers putty. you can roll this out in a snake long enough to incircle your hole to make a dam. then fill with water to keep the drill bit cool. i cut a small square of plywood 1/2 '' thick and cut a hole in it the size of your bit then press it on the putty to use as a guide and it keeps the water in also. go slow ! hope this helps!

 

[20 20]

<a href=showthread.php?s=&postid=7779778#post7779778 target=_blank>Originally posted</a> by hangles
Also pick yourself up some plummers putty. you can roll this out in a snake long enough to incircle your hole to make a dam. then fill with water to keep the drill bit cool. i cut a small square of plywood 1/2 '' thick and cut a hole in it the size of your bit then press it on the putty to use as a guide and it keeps the water in also. go slow ! hope this helps!

Dang, wish you would have posted this before I drilled mine last night. I do the plummers putty thing, but hadn't thought about the wood guide, that would have been helpful!

 

[Stile2]

<a href=showthread.php?s=&postid=7763751#post7763751 target=_blank>Originally posted</a> by jaze36
The same distance as the diameter of the drill bit, so if you have to drill a 1 1/2" hole no closer than 1 1/2".

I've drilled holes and weirs beginning and ending at the edge.

 

[hangles]

they will crack eventually if there is stress put on the tank during a move or settling on a stand thats not stable.