Trying to drill a few small holes through the concrete floor outside the back of my house. The problem is that I am only getting about quater of an inch deep before the bit melts :mad:
I have tried taking it slowly (using hammer action) but just seem to hit a dead stop and the bit rounds off.
What am I doing wrong :confused:

BTW I am using cheapish BandQ bits.

Cheers

Is it reinforced concrete? steel bar..

cheap bits is bad for a start.. start with a smaller dia hole first.. the bigger the diameter the slower the rotation on the drill..

All else fails.. hire an SDS+ Drill from HSS and enjoy.

David

Thanks David
Don't think it is a reinforcing bar, I think its the agregate (sp?) that they have used in its mix. Some of the pebbles are as hard as hell.
Only tried using a 5mm tipped bit, couldnt even get through with that :(

This all seems like a lot of hassel to screw a gazebo down :D

Using masonry drill bits?


Masonry
http://www.screwfix.com/sfd/i/cat/58/p1403958_m.jpg

HSS
http://www.screwfix.com/sfd/i/cat/50/p1409950_m.jpg

yep, defo masonry bits!, though they look more like wood bits when I have finished with them LOL

SDS+

I had a similar problem a while ago and the solution made me feel a total idiot.

I had the drill rotating the wrong way :rolleyes: - which is why it wouldn't cut through as much as it should.

Sorted then, they look like the beasties that I need. :D

Cheers

I had a similar problem a while ago and the solution made me feel a total idiot.

I had the drill rotating the wrong way :rolleyes: - which is why it wouldn't cut through as much as it should.

LOL

My drill will only go one way (being a cheapo Christmas present)

LOL

My drill will only go one way (being a cheapo Christmas present)

A normal hammer drill will always overheat the drill bit in concrete, best to use a SDS drill and bit.

Mog

As said.. you need an SDS+ Drill with the SDS+ Drill bits!!!