On Sun, 29 Jan 2012 22:36:33 -0500, mcp6453 wrote:

On 1/29/2012 10:32 PM, DanG wrote:
On 1/29/2012 9:09 PM, mcp6453 wrote:
Often on Holmes Inspection and This Old House, the workers use what appear to be
hammer drills as electric screwdrivers, particularly for lag bolts or long
screws. Are they really using hammer drills, or does it just sound like a hammer
drill?


Impact driver. Yes, I suppose it is a bit like a hammer drill. I've not torn
mine apart yet to see what is impacting, but they sure make Tapcons, lags, and
Phillips screws work wonders.

Here is some information: type "impact driver" in google. These things are all
the rage, but it would be the first tool I would replace if lost or dead.



If you were going to buy one tomorrow morning, which one would you buy? Impact
makes more sense than hammer.

I have a Bosch 12V and an 18V. I use the 12V about 80% of the time. It's
nice and light but will still drive a #9x4" screw if you ask it to. The 18V
will drive 5/16" lag screws, though I don't very often (would rather use a
ratchet wrench).