Re: [AFMUG] Sharpening Drill Bits

Josh Reynolds Thu, 04 Jun 2015 11:13:07 -0700

Anyfing u waaaannt

On Jun 4, 2015 3:39 AM, Mike Hammett <[email protected]> wrote:

Given Steve's reputation, I'm not sure what we're talking about re: $46 for 20 holes.

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Mike Hammett
Intelligent Computing Solutions
http://www.ics-il.com

Midwest Internet Exchange
http://www.midwest-ix.com
From: "That One Guy /sarcasm" <[email protected]>
To: [email protected]
Sent: Wednesday, June 3, 2015 10:17:31 PM
Subject: Re: [AFMUG] Sharpening Drill Bits

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]> 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]> 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
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

[email protected]

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

Re: [AFMUG] Sharpening Drill Bits

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