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+--- Thread: Drill bits (/thread-3530.html)
Drill bits - pepi - 04-10-2017
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
RE: Drill bits - Vinny - 04-10-2017
All of the ones I've had (read: cheap) the sharpness outlasted the coating.
RE: Drill bits - TomG - 04-10-2017
Not worth the money for general use.
Tom
RE: Drill bits - rleete - 04-11-2017
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.
RE: Drill bits - pepi - 04-11-2017
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?email=greg.pepitone@comcast.net&utm_source=email&utm_medium=email&utm_campaign=041017_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
RE: Drill bits - rleete - 04-12-2017
TiN is supposed to harden the surface for longer wear.
RE: Drill bits - Fortis - 04-22-2017
I tend to buy older (better quality) drill bit .
RE: Drill bits - wawoodman - 04-23-2017
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?
RE: Drill bits - Dr Stan - 04-23-2017
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.
RE: Drill bits - Vinny - 04-23-2017
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.