Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Desert Traveler
 
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Default Titanium Drills?

Just got a NorthernTools e mail with a titanium drill set for $42 for a 115
piece set. What do you think of Titanium drill bits?

Or maybe I need a sharpener for the hundreds of dull bits I already have
...................

Steve


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Ian Stirling
 
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Default Titanium Drills?

Desert Traveler wrote:
Just got a NorthernTools e mail with a titanium drill set for $42 for a 115
piece set. What do you think of Titanium drill bits?


It's almost certainly TiN coated steel of some sort.
However, if the bits are poor steel anyway, then they are not of much
use.
There may be some benefit in better chip clearing.
Learning how to sharpen drillbits is good.

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Todd L
 
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Default Titanium Drills?

Those sets are all over ebay. You can get them for about 20-25 bucks.

Todd L

"Desert Traveler" wrote in message
news:FNxWa.33314$Ne.31414@fed1read03...
Just got a NorthernTools e mail with a titanium drill set for $42 for a

115
piece set. What do you think of Titanium drill bits?

Or maybe I need a sharpener for the hundreds of dull bits I already have
..................

Steve




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Gary Coffman
 
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Default Titanium Drills?

On Sat, 02 Aug 2003 22:07:59 GMT, Roy Hauer wrote:
Harbor Freight has regular Black Oxide bits n sale now, 115 piece set
for about $24.00, which should do just fine in most home shops for the
average guy. I sort of like the HF bits and other import, as they do
seem harder than some american made ones. The biggest problems I found
with the ones that did not drill right was that they were not
sharpened right, and other than that, they seem to hold up just fine.
I have heard that the Chinese use cyrogenic treating on their
drillbits.


Well, I have that set of HF bits. I was drilling a 1/2 inch hole in some
diamond plate on my truck, and suddenly the drill motor (a Hole Hawg)
started to free spin. I stopped the drill motor and the bit had a reduced
round shank about a half inch long at the end of the bit. The flutes had
sheared free of the drill body for half an inch from the tip. Now that's
crappy metallurgy. I had never seen a bit fail that way before.

I went and got a good Cleveland Twist Drill bit, and it breezed through
the rest of the holes with no problem.

Gary

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Eastburn
 
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Default Titanium Drills?

I got a laughing in my hat e-mail with that in it -
the drills are coated - if they were solid stuff they would likely
twist if ever slightly jammed.

The coating is just to help reduce wear with hard materials.
Doesn't say as to the quality at all. A chunk of lead can be Ti
coated.
Martin
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