Sorry for the seemingly dumb question, but I need to attach some PVC conduit
to my foundation using conduit clips. Problem is that I don't have a hammer
drill, so I wanted to know if there is any kind of fastener I can use
instead that doesn't require a hammer drill but will hold on the concrete
If I'm smoking dope, just lemme know and I'll find someone who has a hammer
drill.... but I figure there must be something out there.
As nearly as I can tell, a drill just turns, a drill hammer can be set
to turn and hammer or just turn, and a rotohammer is a heavy duty
version of a drill hammer that only hammers and turns - no "turn only"
Now someone is going to check in and tell me about their Binford
Roto-Hammer 9000 that has nine horsepower and a no-hammer option. :)
As far as the original post, either a power load nailer or a concrete
bit in a regular drill and inserts, as someone else suggested, would
probably do the trick.
Pretty much. A rotohammer has a splined bit that can't slip, and is
heavy duty enough that you can core a 2" hole through a concrete wall.
That is the electric version. You can get bigger with air tools. I have
run an air drill that was the same size as a 90 lb. jack hammer, except
it turned the bit. The bit was a large (1.5"?) star bit with an air
channel in the center to blow the chips out of the hole. Even bigger
than that is an air track, that they use for drilling rock for setting
explosive charges for quarries.
A hammerdrill is useful for drilling smaller ( <1/2") holes in concrete,
brick, or masonry. The chuck (& bit) move back and forth many times per
minute. You can use regular bits or masonry bits. Most also will operate
in "drill only" mode to increase the usefullness of the tool. These work
much better than a normal drill for concrete.
A rotohammer is a different beast altogether. The special (SDS+,
spline, SDS max) bit is turned by means of splines on it. The tool has a
mechanism that hammers directly on the bit itself. The beats per minute
are fewer than a typical hammerdrill, but far more energetic. Rotary
hammers can sometimes include "rotation only" and "hammer only" modes to
increase the versatility of the tool. These tools are for serious concrete
drilling and will drill 1-2" holes through hard, aged concrete. With a
core bit, they can drill a 3+" diameter hole through a foundation wall to
bring in underground services.
I see the advice on here that you need a hammer drill to drill holes in a
foundation. This is total bunk. I have drilled dozens of holes in concrete,
cinderblock and brick with regular drills- both corded and cordless. Sure a
hammer drill makes faster work of the project, but if you are doing a
one-off project, drilling no more than 15 or 20 holes, you will be just fine
with a couple of masonry bits and a regular drill (preferably corded).
I prefer Tapcon screws for this application- they screw directly into
masonry with no anchors and really hold tight.
Actually, your advice is total bunk- to use your genteel vernacular.
Much of the aggregate in concrete will simply not be drilled with
carbide bit. Hammer-drilled- no problem. Not to mention that it's
_much_ simpler to put hole where desired with hammer-drill.
Get your facts straight before getting obnoxious, if I may suggest.
You don't need a hammer drill...all you need is a masonry bit.
But you'll get each hole done about 75% faster with a hammer drill.
And they're cheap now...some under $20.
But a regular FAST drill will do the job. Don't try it with a 500 rpm
Have a nice week...
Help keep down the world population...have your partner spayed or
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