Drilling concrete
Posting Guru
Joined: Sep 2003
Posts: 2,259
Likes: 0
From: Florida Hill Country
Originally Posted by Torque1st
One question, when drilling large holes like 1-1/4" in concrete is it best to start with say 3/8", then 3/4" then finish with a 1-1/4" or just go with 1-1/4" from the start?
Elder User
Joined: Jul 2006
Posts: 545
Likes: 0
From: Lockport, NY
hammer drill is nice but not neccessary. i install removable speed bumps for apt complexes and shopping centers. i use a 1" sds rotary drill all day long. i have drilled hole 2-3" and as deep as 1' with ease.
as for water never use it when drilling concrete will make for trouble later on. anchors will depend what u intend . if traffic(cars bus etc ) lead anchors. most others plastic will work including hang severely heavy items.
as for water never use it when drilling concrete will make for trouble later on. anchors will depend what u intend . if traffic(cars bus etc ) lead anchors. most others plastic will work including hang severely heavy items.
Post Fiend
Joined: Jun 2002
Posts: 13,873
Likes: 3
From: Atlanta GA
> the concrete blade in the circular saw too
Those work poorly compared to a mason wheel in a 4.5" grinder.
I agree with the hammer drill. I did not see where it was mentioned you are using lags or not? If you just need to make rough sized holes, an electric jack hammer works great.
Those work poorly compared to a mason wheel in a 4.5" grinder.
I agree with the hammer drill. I did not see where it was mentioned you are using lags or not? If you just need to make rough sized holes, an electric jack hammer works great.
