Just curious...

[kcm.MN]

Didn't want to romp on the Drilling Concrete thread, but wanted to ask this question. And am keeping Bill T's need of drilling "10 3/4 x 5 deep holes". What's the general consensus of a drill like this accomplishing that job?

https://www.dewalt.com/product/dw511/12-13-mm-vsr-single-speed-hammer-drill

 

[SkipperII]

I recently needed to drill 8 holes for a porch railing. My cordless drill with a masonry bit wasn't doing very well, so I ran to HF and
bought one of their /rotary hammer drills, took me about ten minutes to drill the holes with it.

 

[504]

It depends on how many hours you have to get it done. I
think I have four hand drills with the hammer drill setting.
Its unbelievable how much faster and easier it is to drill
with a true hammer drill, about like trying to drill a hole in
reverse and then switching to the right direction.

 

[john in la]

There is a reason you can buy a battery power hammer drill
but I have never seen a battery power rotary drill. A rotary drill
would eat a battery up because it needs so much power.

Yes you can drill small holes in concrete with a hammer drill
but you get into bigger sizes a rotary hammer is so much
faster.

About like cutting a steak with a butter knife. Yes it can be
done but who wants that headache.

 

[Jim.ME]

The applications spec in the document you posted a link to pretty well gives you the answer.

You can drill 3/4" holes but it is going to take some time and stress the tool, to say nothing about your patience.

 

[moresmoke]

Milwaukee builds battery rotary hammers, Im sure other brands do as well. Last I looked they are in the $700+ price range.

 

[timcasbolt]

I have that very drill, and would agree that 3/8" is the limit on concrete. Does just fine on 1/4".

 

[Mule Meat]

(quoted from post at 06:44:08 09/08/23) I have never seen a battery power rotary drill. A rotary drill
would eat a battery up because it needs so much power.

Not true.
DeWalt makes a battery powered rotory hammer with a 1" chuck.


Look into the [b:35f64ecd8b]DeWalt DCH273B[/b:35f64ecd8b] .

 

[Stephen Newell]

The name on it has a lot going against it. I don't buy anything Dewalt anymore. Harbor Freight would be better quality.

 

[old-9]

Do any of you remember or have used a STAR bit? They worked amazingly well, just hit with a hammer and twist between blows. I still have many of dads old bits. The old ways will always work. Work, You that is. joe
star bits

 

[kcm.MN]

(quoted from post at 14:43:31 09/08/23) The name on it has a lot going against it. I don't buy anything Dewalt anymore. Harbor Freight would be better quality.

I bought this drill off eBay last year. The guy sold it for $40. I've yet to find anything wrong with it, and it was brand new/never used. Never even unboxed. Only thing missing was the chuck key. And yes, it is a dream to run! I am VERY happy with my purchase. :mrgreen:

 

[Tony in SD]

That drill would Not be my first choice. I have had bad luck with that type of Chuck on a hammer drill.

 

[Pete in Holland MI]

Any hammer drill will be better than a straight drill, but your choice in bits will have a bigger impact. A Hilti-style concrete drill will
probably out drill a combination drill/hammer-drill as you describe, as they, and their bits, are built for that purpose, and perform well.

 

[wp6529]

I have the Hilti variant of that (TM7S-VSR) and it works quite well within it's limits. Small anchors for mounting electrical stuff, etc. just fine. Even does well with some larger core bits and I have a water swivel attachment for that use. Still does not compare to a rotary hammer which I have also used many times.