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Old 01-27-2009, 09:23 PM   #1
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Auger bits last longer than spade bits?


Hi;
I did some drilling with 3/4" spade bits today. I noticed that by the time I had finished driling, my spade bit was badly beaten.
I only drilled through a few studs, although at an angle, and one was pretty thick.
I don't know whether I hit nails (shouldn't have, since there was no sheetrock or plaster wall in the area) or just that I'm using cheap junk bits.
They are Irwin Speed-Bore. One was 12" extended shaft, the other was standard shaft.

Would I be better off with auger bits?
I know they cost more, but do they last longer?

Edit: I found a Greenlee "Nail eater" 3/4" x 18" auger at HD's web site. This looks like what I should get.

Thanks

FW

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Old 01-27-2009, 09:39 PM   #2
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Auger bits last longer than spade bits?


I have two of those Greenlee bits, the 18" and the 6". They worked well for me when I did about 800 sq ft of electrical work in a new addition. I did use them with a 1/2" Milwaukee Magnum drill that worked quite well.

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Old 01-27-2009, 09:40 PM   #3
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Auger bits last longer than spade bits?


these work the best IMO
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Old 01-27-2009, 10:15 PM   #4
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Auger bits last longer than spade bits?


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Originally Posted by II Weeks View Post
these work the best IMO
Will the shaft fit into an extension? I need at least 12". It's old work, so I'm going in through cutouts in the walls / ceilings.
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Old 01-27-2009, 10:19 PM   #5
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Auger bits last longer than spade bits?


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Originally Posted by handyman78 View Post
I have two of those Greenlee bits, the 18" and the 6". They worked well for me when I did about 800 sq ft of electrical work in a new addition. I did use them with a 1/2" Milwaukee Magnum drill that worked quite well.
I have a DeWalt 1/2" drill (corded of course). Just bought it day after Xmas. I would never have been able to do the work I was doing today with my old 3/8" Craftsman drill. It would have stalled out and just died on me.

The only thing I don't like about these auger bits (at least from what I can see on the HD web site) is that they will not fit any of the extension shafts I have seen. For most of my work, the 18" should be good enough, but today, I actually used my 52" Greenlee Diversi-Bit extension with the 3/4" spade bit.
If it hadn't been for the fact that I had previously filed down the shaft of that bit to remove the ball at the end, it would not have fit that shaft.
Of course, after filing, it won't fit the extension it was designed for any longer<g>

FW
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Old 01-27-2009, 10:38 PM   #6
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Auger bits last longer than spade bits?


They do make an extention for the bits II weeks posted. I like the auger bits, have the 18" and 6" like someone else posted. I also have the flexible bits from greenlee that are 50" or so and they also come in 72" versions. The flex bits are kinda expensive around 40 bucks each but I like to use the right bit for the job.
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Old 01-27-2009, 11:23 PM   #7
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Auger bits last longer than spade bits?


Unless you've hit some nails, there is no reason for an Irwin spade bit to be beat up when drilling through wood. Don't forget there are nails in top and bottom plates.
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Old 01-27-2009, 11:33 PM   #8
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Auger bits last longer than spade bits?


I almost always use an auger. Nothing's faster. I'm not a big fan of spade bits.

The bits shown above are forstner bits, which would work fine but are intended more for woodworking applications because they drill clean flat-bottomed holes. When drilling a lot of holes in studs and joists, most tradesmen around here use a self-feeding forstner bit in their hole hogs because they cut about twice as fast as a regular forstner. They're beefier too, and can handle hitting a nail from time to time.
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Old 01-28-2009, 05:31 AM   #9
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Auger bits last longer than spade bits?


The beauty of the auger is when you do hit a hidden nail, you can touch up the bit with a file and the bit can be professionally sharpened. I use a half dozen Milwaukees like KCT has shown. At least one I've had for over 10 yeras Best of all you can buy replacement feed screws at HD for about $10 for a set of 6 with a spare allen key.
They save time and money and you can sometimes find a spare for rough use at the local pawn shop on a good day.These bits are less work because they pull through material, but they are also dangerous in the wrong hands...
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Old 01-28-2009, 06:27 AM   #10
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Auger bits last longer than spade bits?


Quote:
Originally Posted by InPhase277 View Post
Unless you've hit some nails, there is no reason for an Irwin spade bit to be beat up when drilling through wood. Don't forget there are nails in top and bottom plates.
That's probably what happened.
I'm going to get a couple of 3/4" augers; one 18" and one shorter.
I like the 3/4" over 1/2" because I can get two (or even three if necessary) 12/2 through a 3/4 hole.

Thanks for your help guys.

FW
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Old 01-28-2009, 07:27 AM   #11
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Auger bits last longer than spade bits?


I have stanley spade bits, they don't wear fast. I think you hit something because there is no reason any bit should be beat up that fast.

Those augers are pretty slick.
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Old 01-28-2009, 07:34 AM   #12
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Auger bits last longer than spade bits?


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Originally Posted by rgsgww View Post
I have stanley spade bits, they don't wear fast. I think you hit something because there is no reason any bit should be beat up that fast.

Those augers are pretty slick.
I agree. Must have hit nails.

FW
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Old 01-28-2009, 07:57 AM   #13
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Auger bits last longer than spade bits?


I exclusively use an 18" and a 6" auger bit. The self feed feature and the ability to touch up the cutting edge make them the better choice. They are both 7/8" bits.
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Old 01-28-2009, 08:04 AM   #14
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Auger bits last longer than spade bits?


Quote:
Originally Posted by KE2KB View Post
I'm going to get a couple of 3/4" augers; one 18" and one shorter.
Personally I'd get a 1". It'll make your pulls a lot easier than a 3/4".
I have a couple 18" augers but I get the most use out of my 6" version.

Just be careful with any bit that big going into framing lumber. A catch can be hard on your hands or any other body parts that are in the way of a spinning drill. I took a drill battery in the face a couple months ago when my auger caught and ended up with a few stitches (stupid, but it can happen). That's why you see most professional electricians using large right angle drills instead of regular drills...They're easier to control.
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Old 01-28-2009, 08:19 AM   #15
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Auger bits last longer than spade bits?


This are the only bits that I have been able to use with a cordless drill to go thru studs, including double plates. These are Irwin Speedbor Max.



A three pack was about $15 with a 5/8, 3/4 and a 7/8 or 1".

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