wheel chock

[two-stroke-brit]

i got a wheel chock for the garage/truck bed and set about trying to drill the floor of the garage .
i have destroyed two drill bits and only got one hole.
i have a black and decker hammer drill but they must have mixed diamonds in with the concrete as i get about 1/2 an inch in and come to a dead stop.
any help would be appreciated.
cheers mark

[650hardtail]

did ya hit rebar ?
even though the bits drill concrete- steel destroys em in a heartbeat..
you could blow out the dust a air and maybe lower a small magnet down the hole and see
if it sticks at the bottom

[Coyote]

Get a bucket of water and a cup. Water makes the job much easier. Just keep wetting / filling the hole as the water evaporates off from the heat.

[Madbuffalo]

Garage floors usually have either rebar or welded wire fabric, which is basically small rebar welded together in both directions 4" apart, but both should be at least 1-1/2" down so I'm not sure what you'd be hitting at a half inch. Could be conduit if there is any wiring running through your floor. If so, be careful. Any aggregate you hit will generally be softer than the concrete. Good luck, hope you get it figured out.

Josh

[two-stroke-brit]

thanks to all that chipped in .
i used coyotes water cooled method and got the job done.
cheers mark

[650hardtail]

try starting w a smaller diam bit..then go bigger..and the water

[H2RICK]

Interesting !! Noted and filed in the old memory banks....not that I hope to be doing any concrete drilling in the future....but one never knows, do one ??