Core drilling

Has anyone on here ever done any core drilling using the ukam bits and water cooling system? I started doing it with a buddy today and was wondering how much water would be needed to do say 10 bolts? We got two out successfully then lost day light. Also is there a need to use the hammer drills to core drill them or would a normal drill work as well? We are at the NRG and in some of it's hardest sandstone.

You need a lot of water or you will overheat the bit and the diamond portion will fall off the body of the bit. I would guess more than 1 liter per bolt if not 2 liters.
You could use a regular drill since you don't want to use hammer mode anyway. I think I recall the ideal speed being pretty low so keep that in mind if you choose a variable speed tool.

Chris Whisenhunt wrote:...We are at the NRG and in some of it's [sic] hardest sandstone.

"its," not "it's."

Seriously, you might want to get some expert advice on this. If your spelling and grammar are this bad, you can't be trusted to be messing around with life-saving anchors.

Ouch!

its teh internetz... i think he spellchecked his resume.

Pnelson wrote: "its," not "it's." Seriously, you might want to get some expert advice on this. If your spelling and grammar are this bad, you can't be trusted to be messing around with life-saving anchors.

Every time someone misuses an apostrophe, God kills a climber.

Or something like that?

Bottom line - "Pay attention too you're bolt. If its lose its going to kill some one."

Pnelson, protecting and serving with the best of em'. Its a damn shame that people treat climbing like its a game, with all it's inherent risks.

Gunkiemike wrote: Every time someone misuses an apostrophe, God kills a climber. Or something like that? Bottom line - "Pay attention too you're bolt. If its lose its going to kill some one."

Same with to-too-two;)

Chris being in NRG why don't you hook up with Jim Taylor, he has a lot of experience core drilling. I think he is already in South America for the winter but if not he may be willing to help. For those reading this thread in the future, Jim's video is a good reference. youtube.com/watch?v=i9I9fYs…

Jeremy Monahan wrote: Pnelson, protecting and serving with the best of em'. Its a damn shame that people treat climbing like its a game, with all it's inherent risks.

If someone can't be bothered to be accurate in their forum writing - the only way anyone can assess you as a person - then how can that person be trusted with the safety implications of climbing systems?

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