I was doing some cable work on the second story of our local bank and
had to drill some holes through the floor and rented a rotary hammer for
the job. I forgot to tell the folks in neighboring offices that I was
about to set that thing off for the first hole. Some poor lady showed up
in the door of the room I was working in with eyes as big as saucers and
a very startled look on her face. For subsequent holes I ran from office
to office warning everyone prior to drilling the hole.
That One Guy /sarcasm wrote:
Rotary hammers, fucking beasts.
We were talking about our tapered bits. We have tons with one dull
ring. 46 bucks for 20 holes adds up.
On Jun 3, 2015 10:00 PM, "Jason McKemie"
<[email protected]
<mailto:[email protected]>> wrote:
I must have never used a rotary hammer then, hammer drills seem to
work just fine for stone, masonry, etc.
On Wednesday, June 3, 2015, Ken Hohhof <[email protected]
<mailto:[email protected]>> wrote:
Rotary hammer very different beast than hammer drill which is
only good for stuff like tapcons.
*From:* Jason McKemie
*Sent:* Wednesday, June 03, 2015 8:08 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] Sharpening Drill Bits
Yeah, never use anything but a hammer drill on stone/concrete/etc.
On Wednesday, June 3, 2015, Josh Reynolds
<[email protected]> wrote:
What you want for the concrete is a rotary hammer. A
little spendy and the bit cost is astronomical, but they
will bite through granite like it's nothing in seconds. We
use rotary hammers for rohn wall mount kits going into
brick, concrete, and stone. Have only tried the corded
hitachi's, although dewalt has a cordless one I've been
keeping my eye on.
http://www.amazon.com/Hitachi-DH40MRY-16-inch-Rotary-Hammer/dp/B000XVINQY/ref=sr_1_4?ie=UTF8&qid=1433378353&sr=8-4&keywords=hitachi+rotary+hammer
is what we've used.
http://www.amazon.com/DEWALT-DCH253M2-Mode-Rotary-Hammer/dp/B00DD1UOTU/ref=sr_1_9?ie=UTF8&qid=1433378421&sr=8-9&keywords=dewalt+rotary+hammer
is the one I've had my eye on.
Josh Reynolds
CIO, SPITwSPOTS
www.spitwspots.com <http://www.spitwspots.com>
On 06/03/2015 02:37 PM, Jaime Solorza wrote:
We are trying different brands for 3/32 holes we need for
door contacts and switches. Metal is tough then we hit
concrete on door frame. Slow speeds and oil helps but we
eat them up. For concrete and cinder block walls Hilti
drill and bits have no problem.
Jaime Solorza
On Jun 3, 2015 4:26 PM, "Chuck McCown"
<javascript:_e(%7B%7D,'cvml','[email protected]');> wrote:
You can do it by hand with a bit of practice.
*From:* Glen Waldrop
*Sent:* Wednesday, June 03, 2015 4:24 PM
*To:* javascript:_e(%7B%7D,'cvml','[email protected]');
*Subject:* Re: [AFMUG] Sharpening Drill Bits
My dad has always sharpened his own, so I tend to do
the same.
In my experience, if used in wood they can be
sharpened with little issue. If you drill through
metal, buy a new one.
It loses some of the hardness on the edge. It really
needs to be tempered again after sharpening.
----- Original Message -----
*From:* Rory Conaway
*To:* javascript:_e(%7B%7D,'cvml','[email protected]');
*Sent:* Wednesday, June 03, 2015 5:18 PM
*Subject:* [AFMUG] Sharpening Drill Bits
We are paying $15-$25 for longer drill bits.
When they start to get dull, just wondering if
anyone has had success sharpening them or do you
just buy new ones?
*Rory Conaway **• Triad Wireless •**CEO*
*4226 S. 37^th Street • Phoenix • AZ 85040*
*602-426-0542 <tel:602-426-0542>*
*[email protected]*
*www.triadwireless.net
<http://www.triadwireless.net>*
**
*“You may be an engineer if your idea of good
interpersonal communication means getting the
decimal point in the right place.” – Unknown*
