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1 1/4" diamond hole saw |
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1 1/4" diamond hole saw |
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10-21-2001, 09:16 PM
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#21 |
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Governor
Join Date: May 2001
Location: Northern CA
Posts: 2,171
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you should only barely push ,if at all
 Last edited by organicreefer; 10-21-2001 at 09:20 PM. |
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10-21-2001, 09:49 PM
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#22 |
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Just Moved In
Join Date: Sep 2001
Location: Connecticut
Posts: 48
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Hi sorry to gatecrash!
Does anyone know what is the best tool to enlarge a 1" and 3/4" hole in tempered glass? Thanks Jerry |
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10-23-2001, 01:19 AM
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#23 |
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Citizen
Join Date: Jul 2001
Location: San Diego
Posts: 210
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DIAMOND not carbide grit...
For anyone interested diamond edge hole saws are available from a company called Starret and you can get them through Grainger. You will probably have to special order. They cost a LOT more but should last much longer and you can get the exact size you want. I bought a 1-3/4" (for 1" bulkheads) for $69.00. I have used many carbide grit holesaws and am hoping that the diamond will be faster and last longer. Will update as events warrant.
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10-25-2001, 06:49 PM
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#24 |
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Citizen
Join Date: Mar 2001
Location: Chicago/Athens, OH
Posts: 103
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Tempered Glass
Jerry, once glass has been tempered it can never be altered in any way, it will shatter into little beads. Before tempering all mods to the glass have to be done, ie, cut to size, holes, beveling, etc. Bill.
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10-26-2001, 01:29 AM
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#25 |
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Just Moved In
Join Date: Sep 2001
Location: Connecticut
Posts: 48
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Thanks billzie, I've decided to keep the flow rate at 600 GPH and add a closed loop system, instead.
Running the filtration turnover any faster would require too much trouble to keep the water parameters constant and flowing properly. Thanks Jerry |
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10-27-2001, 02:27 AM
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#26 |
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Citizen
Join Date: Jul 2001
Location: San Diego
Posts: 210
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please pardon my ignorance...
...but I guess I don't understand this "closed loop" thing, doesn't it involve holes in tank? Could someone please explain what you guys mean by "closed loop"?
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10-27-2001, 03:42 AM
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#27 |
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Council
Join Date: Sep 2001
Location: anaheim, CA
Posts: 347
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A closed loop means usually you have bulkheads from tank that feeds water to the pump itself, then the pump pushes water back to the tank. You don't need a sump.
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10-27-2001, 12:38 PM
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#28 |
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Just Moved In
Join Date: Sep 2001
Location: Connecticut
Posts: 48
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 Here's a pic I borrowed from scubadude. He'll probably use his harpoon on me ........ quick...... take a pic before I erase it Jerry Last edited by JerryReef; 10-27-2001 at 12:43 PM. |
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10-28-2001, 01:16 AM
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#29 |
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Citizen
Join Date: Jul 2001
Location: San Diego
Posts: 210
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So I'm not so dumb...
that's what I thought you guys were calling a "closed loop", I'm just used to doing it out the back of the tank and got thrown for a "loop" when JR implied this would eliminate need to drill tank.
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10-28-2001, 01:18 AM
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#30 |
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Citizen
Join Date: Jul 2001
Location: San Diego
Posts: 210
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Diamond edge hole saw
see new thread "drilling glass update"
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10-28-2001, 02:19 AM
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#31 |
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Just Moved In
Join Date: Sep 2001
Location: Connecticut
Posts: 48
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My original question was, enlarging the exisiting 4-holes.
Initially I was planning to use the 1" drains in a closed loop config. and the 3/4" returns as the filteration/sump/skimmer system with the returns over the top of the tank. You see, I have two drain holes and two returns. But hey if it sounds so easy with the diamond tips, I may just do it. Maybe when my warranty is over. Got to give it some thought. Jerry === I do not know where I am headed with this, but I am on my way... |
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10-30-2001, 01:32 AM
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#32 |
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Citizen
Join Date: Jul 2001
Location: San Diego
Posts: 210
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"Jerry, once glass has been tempered it can never be altered in any way, it will shatter into little beads. Before tempering all mods to the glass have to be done..."
The diamond bit isn't going to change that. |
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10-30-2001, 05:22 AM
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#33 |
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Just Moved In
Join Date: Sep 2001
Location: Connecticut
Posts: 48
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That's interesting, as the manufacturer, AGA, informed me that it could be done with a diamond tip drill bit. However, I would void the warranty. Maybe I should check with them again.
Jerry |
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10-30-2001, 10:15 PM
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#34 |
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Citizen
Join Date: Jul 2001
Location: San Diego
Posts: 210
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I have often wondered if the "you can't alter tempered glass" rule is nothing more than folklore. Every glass shop I have ever asked says it's true. Every aquarist I have ever asked says it's true. Every lfs I have ever asked says it's true. Still, I do not know of one single person who has ever tried it. I wonder if it's true? Since I have the bit anyway, I think I will try it on something I don't really care about. Stay tuned for results.
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10-30-2001, 11:40 PM
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#35 | |
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Just Moved In
Join Date: Sep 2001
Location: Connecticut
Posts: 48
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Below is the note I referred to. But to be safe, do let me know the outcome of your tempered experience. I would hate to screw up my tank, as it cost me a bomb!
Quote:
 Thanks for the time and effort, David. Jerry === A mind that is stretched by new experience can never go back to its old dimensions..... |
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08-06-2005, 01:44 AM
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#36 | |
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New in Town
Join Date: Aug 2005
Location: Virginia
Posts: 1
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drilling tempered glass
"Tempering" glass is a process of extremely rapid cooling of formed glass. this process cools the outside faster than the inside creating extreme tension on the two outer panes and a substantial lower tension on the inner one. this process greatly increases the strength of the glass (and the brittleness). when you attempt to drill the glass it releases this tension suddenly, 8 out of 10 times will result in a broken aquarium, however even if it doesnt (slim chance) it weakens the glass to a point that it can no longer withstand even reasonable weight (thus voiding the warrenty). (i believe tempered glass is 15,000 psi were standard is 400 psi!). Hope this helps.
Quote:
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Linear Mode
