Big Drill??

[CKreef]

it just says allow to cure 24hrs before painting

 

[geekdafied]

I would look into how lng it takes for it to be reef safe, or you might want to look into marine grade silicone. I know for sure that takes 48hrs before you put it in water. It will hold the rocks in place.

 

[CKreef]

yeah somewhere it set safe in 6 hours i think???

 

[geekdafied]

I just looked up thorite, that stuff you have to cure for 3-6 weeks before its reef safe. They will throw your PH way off if you dont.

 

[CKreef]

where did you see that

 

[waynesworld]

i think my big drill will hold your bit when do u want to use it?

 

[geekdafied]

I dont remember exactly, I googled it. But concrete in general is super acidic and would put the ph off the charts. thats why when you make aragocrete, it takes so long to cure before its reef safe.

 

[CKreef]

Wayne i am still gathering all the materials needed for this project and probably some warmer weather if we work with concrete. I would really appreciate it though if I could borrow it. Is it bigger than a 1/2" chuck?

 

[CKreef]

If we get some I know i will test it before i use it

 

[geekdafied]

I have also read that using vinegar speeds up the process, but I have never tried when I made it. I just put the pieces in the back of the toilets, lol and left them for 2 months.

 

[Mdwannabe]

If your 3/4" masonry bit need's a chuck bigger than 1/2", by all means take it back and get a bit with a 1/2" shaft. 3/4" shaft on a 3/4" bit equals a broken wrist
I've got a 1/2" hammer drill you can borrow, and I would'nt try a 3/4 bit-shaft combo, you're talking an advancing tripod to safely hold the drill for hole boring. Just imagine the kick back torque that drill would have.
If you do find a 3/4 chuck drill, please let me know when you are drilling, I'll make sure I'm not on-call that day
JMTCW

 

[fishdoc11]

Concrete is basic not acidic.

Lime = alkaline

I agree with Rick. I have almost broken my wrist several times drilling through metal beams with a 1/2 drill. A hammerdrill on low speed is probably what you need. Even then it will take a bit of finese to get the hole started on a surface that isn't flat ie. live rock.

good luck, Chris