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Dewalt titanium drill bit set #5440681 05/28/20 07:29 AM
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Donald Offline OP
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I have a set of the gold colored titanium drill bits from Dewalt. Says good for wood or metal drilling.

I tried to use them to drill through a bunch of hard drives before throwing the hard drives out. But the drill bits dull very quickly.

What gives


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Re: Dewalt titanium drill bit set [Re: Donald] #5440688 05/28/20 07:37 AM
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Trav Offline
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Crap bits, get some cobalt bits.


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Re: Dewalt titanium drill bit set [Re: Donald] #5440691 05/28/20 07:42 AM
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Astro14 Online Content
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Titanium in this case is marketing. It’s a microscopically thin surface coating which is supposed to make the bits harder to clog but it doesn’t work.

Cobalt steel alloy is the best, but even those will eventually become dull.

Get a bit sharpener. They work wonderfully.


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Re: Dewalt titanium drill bit set [Re: Astro14] #5440702 05/28/20 07:52 AM
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Those gold bits don’t seem to rust as bad if left in a humid spot and are easier to see …
Think that completes the bonus list !

Re: Dewalt titanium drill bit set [Re: Donald] #5440726 05/28/20 08:28 AM
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just take the hdd apart and keep the super strong magnets.


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Re: Dewalt titanium drill bit set [Re: Donald] #5440832 05/28/20 10:28 AM
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irad Offline
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Hammer is the tool. You could secure wipe the drive and give them away to people who need them. Free software is available, ultimateboot and hirens come to mind.

Re: Dewalt titanium drill bit set [Re: Astro14] #5440855 05/28/20 10:57 AM
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spasm3 Online Happy
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Originally Posted by Astro14
Titanium in this case is marketing. It’s a microscopically thin surface coating which is supposed to make the bits harder to clog but it doesn’t work.

Cobalt steel alloy is the best, but even those will eventually become dull.

Get a bit sharpener. They work wonderfully.


There are different cobalt bits. M35 is 5% cobalt , m42 is 8%.


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Re: Dewalt titanium drill bit set [Re: spasm3] #5440862 05/28/20 11:06 AM
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Astro14 Online Content
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Originally Posted by spasm3
Originally Posted by Astro14
Titanium in this case is marketing. It’s a microscopically thin surface coating which is supposed to make the bits harder to clog but it doesn’t work.

Cobalt steel alloy is the best, but even those will eventually become dull.

Get a bit sharpener. They work wonderfully.


There are different cobalt bits. M35 is 5% cobalt , m42 is 8%.


Thanks!

I didn’t know that...


32 Packard 15W40
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Re: Dewalt titanium drill bit set [Re: spasm3] #5440865 05/28/20 11:08 AM
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Trav Offline
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M42 is better used in a drill press as they are a little too brittle especially in the smaller sizes for hand use. Solid carbide is the best for hardened steel but is way too brittle even for a standard chuck drill press, they don't tolerate even small amounts of run out and cost a small fortune.


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Re: Dewalt titanium drill bit set [Re: Trav] #5440873 05/28/20 11:14 AM
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spasm3 Online Happy
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Originally Posted by Trav
M42 is better used in a drill press as they are a little too brittle especially in the smaller sizes for hand use. Solid carbide is the best for hardened steel but is way too brittle even for a standard chuck drill press, they don't tolerate even small amounts of run out and cost a small fortune.



Thanks! I did not know that m42 was better for drill presses, makes sense. I have m35 they are much better than titanium. I really see no difference in hss coated with titanium and plain hss.

Last edited by spasm3; 05/28/20 11:14 AM.

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Re: Dewalt titanium drill bit set [Re: Donald] #5440898 05/28/20 11:45 AM
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If you have external dock us "Darik's Boot and Nuke" to do an NSA grade erase. then sell or donate them. If you dont have time then drill the drives from the back circuit board side which is cast aluminum. Older drives have stainless cover which is whats killing your drills "bits" :-)

I have disassembled dozens of drives with just torx bit. the magnets inside are truly amazingly strong. And the older high perf drives have the biggest magnets.

Last edited by Kawiguy454; 05/28/20 11:48 AM.
Re: Dewalt titanium drill bit set [Re: Donald] #5441121 05/28/20 04:27 PM
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double vanos Offline
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I took my hard drive apart with an air chisel. A band saw took care of the rest. The box the drive is in is incredibly robust.


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Re: Dewalt titanium drill bit set [Re: spasm3] #5441473 05/29/20 06:35 AM
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Trav Offline
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Originally Posted by spasm3
Originally Posted by Trav
M42 is better used in a drill press as they are a little too brittle especially in the smaller sizes for hand use. Solid carbide is the best for hardened steel but is way too brittle even for a standard chuck drill press, they don't tolerate even small amounts of run out and cost a small fortune.



Thanks! I did not know that m42 was better for drill presses, makes sense. I have m35 they are much better than titanium. I really see no difference in hss coated with titanium and plain hss.


M35 is ideal for cordless drills, you get the performance of cobalt and longer battery life than if using common or coated bits without the brittleness of M42.
Keeping them sharp is key to good performance with any bit, a small jig type tool is good to have.
This is a decent little grinding wheel jig, for those who don't have fab skills its worth it otherwise this is easily made up.

https://vsctools.com/shop/drill-bit-sharpening-jig/


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