drilling rocks UNDER water?

[lilrobb]

I made the best plan to pre-drill all my rocks - but then rushed to get them in.
Guess what - I forgot to drill them, and now they're far too complicated to remove.
Anyone a thought how to drill a rock in the tank?
I thought of these flexible extension - but am afraid of the lubricants on them...

 

[ralph atl]

Nope, I would pull them out and drill..

 

[frantz]

I wouldn't risk it. Plus, you'd look pretty silly if the drill slipped and someone found you electrocuted hanging halfway in your fish tank. What makes them too complicated to pull out?

 

[lilrobb]

Frantz;782860 wrote: What makes them too complicated to pull out?

The sheer size/weight of the structures - most have been cemented into place...

 

[ralph atl]

If u can find a bit long enough, titanium, SS, or the one for concrete, without drill going underwater, go for it

 

[frantz]

that was your 4000th post!

yeah i suppose that would make it a bit challenging. Depending on the angle maybe an old hand drill, you can find em at flea markets and such or

 

[falos]

Use a battery operated drill find a masonry bit they go up to 48" but cost a arm and a leg
Take a qt 44 oz cup and drill a hole in the bottom use orings around the bit 1 on inside other on the out side press them together and glue them to the cup pull the cup up and down to give you a barrier from the water drill on 1 slow speed try not to git eny liquid on the drill if you do stop let it dry out then continue
I have had to do this one before go slow and you will be ok it also helps to drain the tank as low as
possible
If the top of your tank is all sps you can drain it almost all the way with out eny issues
cut off your ac and dehumidifier Use a spray bottle with tank watter spray them down every 1-3min use a egg timer you can do this for up to 20 min with out causing damage in most sps

 

[ripped tide]

Do a BIG water change and drill the rocks in place?

 

[lilrobb]

How about this:

 

[falos]

LilRobb;782887 wrote: How about this:
http://www.tools-plus.com/flexi-drill-jd722.html">http://www.tools-plus.com/flexi-drill-jd722.html</a>[/QUOTE]

Cool that should work I would rap it in plastic to be safe clean it and the bit with bleach no water in it soak for a few min then wash just to be safe

 

[grouper therapy]

Use a pneumatic drill . Been there done it.

 

[lilrobb]

As in, air-driven?
No worries about the lubricants?!

 

[wds1215]

Home depot and lowes sell extension for drill bits also Fastenal has some long bits

 

[rdnelson]

LilRobb;782887 wrote: How about this:
http://www.tools-plus.com/flexi-drill-jd722.html">http://www.tools-plus.com/flexi-drill-jd722.html</a>[/QUOTE]

Those use some pretty tough spring steel that would be VERY hard to control. At the very least, it would take two people. In my mind, the bit extension will be the way to go. Even better if you use Groupers idea along with it.

 

[wds1215]

Home depot and lowes sell extension for drill bits. also Fastenal has some long bits.

Edit:

Edit: What size bit do you need I've got a 5/8 x 36" that fits a sps max drill

 

[jef4y]

I have a masonry bit that is either 18 or 24" long, but it's rusty right now. You can buy them at HD. I'd wash all the oil off of it and use a battery powered drill.

The big thing to be careful for is not snagging something and causing a slide or slinging it into the glass.

 

[grouper therapy]

LilRobb;782918 wrote: As in, air-driven?
No worries about the lubricants?!

Didn't use any. Direct the exhaust out of the tank via a tube.

Edit: http://www.northerntool.com/shop/tools/product_200322365_200322365

 

[jamescook]

this may be the dumbest thing I've heard. One snag and you'll crash.
please don't try this

 

[lilrobb]

jamescook;782962 wrote: this may be the dumbest thing I've heard. One snag and you'll crash.
please don't try this

The idea to drill it underwater, or the possible solutions?

 

[rjrgroup]

I have a 6ft. 3/8" bit...you could drill it from upstairs...:roll: Seriously though...after everything you've been through lately...I will kick your butt if you do this!!! Slow down, you know what to do bro.