Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community Archives > Special Interest Group (SIG) Forums > Large Reef Tanks

 
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05/11/2004, 05:41 PM
z28pwr z28pwr is offline
Premium Member
 
Join Date: Dec 2002
Location: San Antonio, Texas
Posts: 209
Help with drilling a 240

My 240 is currently at the aquarium shop getting a side pane replaced which got hit by a rock.

While it's there I was considering getting it drilled for a 1.5" bulkhead which calls for a 2 & 3/8's hole but they only have a 2.5" drill bit which should be okay, I guess.

Now they do have a 3" drill bit which is the size needed for a 2" bulkhead, but I'm worried about drilling the tank, since the center of the hole will be about 4.5" from the edge of the tank and I don't want the glass to break under load after it's drilled.

Do you guys think it would be ok to drill a 1.5" hole and a 3" hole on bottom plate about 5" away from the corner or would it be safer just to drill a 1.5" and a 2.5" hole, will that 1/2" to go from a 1.5" bulkhead to a 2" make a big diference as to the glass strength. I think the glass is 5/8's thick

Thanks.
  #2  
Old 05/12/2004, 09:44 AM
SAT SAT is offline
Premium Member
 
Join Date: Apr 2001
Location: Berwyn, PA
Posts: 3,434
I have yet to see any good rules of thumb for what is safe to drill. With the 2" bulkhead, the edge of the hole will be about 3" from the edge of the tank, which IMO ought to be sufficient. If in doubt, you could "sister" that viscinity of the bottom with some strips of 1/2" glass glued on with silicone. Alternately, you could laminate that whole section of the bottom with another piece of glass with the same size hole.
__________________
Stuart
  #3  
Old 05/12/2004, 09:54 AM
justgettinstarted justgettinstarted is offline
Registered Member
 
Join Date: Apr 2003
Location: Indiana
Posts: 1,850
i would think as long as the bottom of the tank is sitting perfectly flush on the stand and fully supported there should be no problem what so ever with the 3" hole....
__________________
Garrett
 

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -5. The time now is 02:41 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef Central™ Reef Central, LLC. Copyright ©1999-2009