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Old 07-20-2011, 09:08 AM
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Drill bits titanium or colbalt what is your choice

Getting ready to replace my drill bit cache. Just wondering what your general impressions might be on the two type of bits. Can the titanium and colbalt be resharpened with a drill doctor? How about the amount of work they do before they will require a freshen up? Is the tip standard, I used a dwalt cobalt 5/16 last night to drill rivets for a ball joint replacement on a friends truck. Light-bulb! time to change up and looking for some input, I am not talking standard set, replacing a number, letter and standard drill set. So any information you can pass along will be greatly appreciated.

Thanks in advance

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Old 07-20-2011, 09:33 AM
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One thing to consider is that the titanium nitride coating on drill bits is very thin, sharpening them will remove the coating from the edge.

The drill doctor should sharpen either.
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Old 07-20-2011, 10:17 AM
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Originally Posted by unix
Getting ready to replace my drill bit cache. Just wondering what your general impressions might be on the two type of bits. Can the titanium and colbalt be resharpened with a drill doctor? How about the amount of work they do before they will require a freshen up? Is the tip standard, I used a dwalt cobalt 5/16 last night to drill rivets for a ball joint replacement on a friends truck. Light-bulb! time to change up and looking for some input, I am not talking standard set, replacing a number, letter and standard drill set. So any information you can pass along will be greatly appreciated.

Thanks in advance
Another thing to consider is if you drill stainless, colbalt is the bit to use. The key to any bits life is the speed at which you use it and keeping it cool while drilling. It won't matter what material the bit is made out of, they will all need sharpening at some point.
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Old 07-20-2011, 11:02 AM
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Doing some research I have noticed as you say titanium being a coating means replacement. I am quickly coming to the conclusion that colbalt is the way to go. For sure any bit gets dull no question on that, but the colbalt allows for some servicing. Thanks you were correct in the information given out..
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Old 07-20-2011, 11:12 AM
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Here's a very long thread on that very subject -

Best drill bits?????
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Old 07-20-2011, 02:48 PM
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By all means buy a Drill Doctor, but not the cheapest one. I have one and it does not work worth a flip. The bits look great after using it but wont drill wood. A buddy has a more expensive one that works great.

Vince
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Old 07-20-2011, 07:41 PM
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Originally Posted by 302 Z28
By all means buy a Drill Doctor, but not the cheapest one. I have one and it does not work worth a flip. The bits look great after using it but wont drill wood. A buddy has a more expensive one that works great.

Vince
Vince - depending on the drill manufacturer, sometimes you have to adjust the drill in the Drill Doctor's collet to make sure the heel is lower then the cutting edge. Some brands of drills I have work straight out, the others, and generally I've found that the larger ones have a 'slower' spiral and need to be rotated just a degree or so clockwise - measured by calibrated eyeball guesstimate. That's something they don't tell you in their training tape/DVD

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Old 07-20-2011, 09:00 PM
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Thanks Dave, will try your suggestion.

Vince
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Old 07-21-2011, 11:41 AM
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Got the doctor had that for awhile 1/2 & 3/4 capable.Training dvd that is a hoot, I guess for some. Looking at going with the black oxide bits primarily because of others having coatings. The black oxide bits will hold onto cutting oil. I agree let the bit do the work, most of my work is steel, no stainless or cast. Guess if I come across these types of materials I will just buy the individual bit for that purpose on that day.
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Old 07-21-2011, 10:23 PM
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I got a set of cobalt a long time ago. My only issue is the smaller ones breaking due to my impatience and losing them. I think FINALLY after a few years I'm noticing one getting dull. I will for sure get another cobalt set soon. Nothing less. I wish I was good at sharpening them. It's really hard. don't try it unless you know what you're doing.
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