Drill bits

[pepi]

Thoughts regarding Titanium nitride (TiN) coated bits .

Good, hype, application, can they be sharpened? Realizing they are coated not thinking

they will not stand to much of that.


All eyes, ears will not apply here,
Greg

[Vinny]

All of the ones I've had (read: cheap) the sharpness outlasted the coating.

[TomG]

Not worth the money for general use.

Tom

[rleete]

A drill Doctor will take even the cheapest bits and make them usable, provided they are not bent. Best 20 bucks (used) I ever spent.

Buy cheap sets, sharpen before use. Coatings make little difference as far as I have seen.

[pepi]

I have a DD and i agree it rocks, owning it for 15 years. As to the question regarding the drill bits I got this in an e mail and has me thinking about the coating.

http://www.grizzly.com/products/g3658?em...g3658_box6

Normanally I prefere the black ozide. But the price of this set has me thinking maybe try something new. What is the purpose or application of the coating?


Greg

[rleete]

TiN is supposed to harden the surface for longer wear.

[Fortis]

I tend to buy older (better quality) drill bit .

[wawoodman]

Which Drill Doctors do you guys have? I have one of the basic models, and haven't been too impressed. Of course, user error and/or ineptitude is certainly a factor.

Other than the capacity, is there any difference between the models? I mean, if I screw up on the cheap one, will I screw up just the same on the top-of-the-line, just with more efficiency?

[Dr Stan]

I have the 750 and have had good service out of it.  One of the better aspects is its sharpening carbide drills.

BTW, +whatever on the coatings.  The ends of the flutes are what cut the material, not the sides, so they are not worth the extra money.

[Vinny]

I have a 500 and a 750. I use the 500 most. It works quite well. The only reason I don't use the 750 that often is I don't remember where I put it! Got them both on ebay and they showed up a day apart. I checked out the 750, the next day the 500 showed up and I just kept using it.