Ignoramus5102 wrote:

I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i
Those might be carbide PCB drills in standard 1/8" shank, various number sizes,
and 82 degree cutting surface.

You might be talking about HSS with split point 82 ? degrees.

Martin

--
Martin Eastburn, Barbara Eastburn
@ home at Lion's Lair with our computer
NRA LOH, NRA Life
NRA Second Amendment Task Force Charter Founder

Ignoramus5102 wrote:
I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i

Center drill:
http://www.lathemaster.com/TN_Center_Drills.jpg

--Winston

Look in catoloq under spotting drills.
Jim
"Ignoramus5102" wrote in message
...
I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i

This type will still "walk" on you, unless work and tool are both in fixed
position, or a center punch mark is used for starting.

RJ

"Ignoramus5751" wrote in message
...
On Thu, 16 Dec 2004 21:03:41 -0800, Winston
wrote:
Ignoramus5102 wrote:
I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i

Center drill:
http://www.lathemaster.com/TN_Center_Drills.jpg



Thanks, that's exactly what I am looking for.

i
--

http://www.littlemachineshop.com/pro...ProductID=1230


"Ignoramus5751" wrote in message
...
On Thu, 16 Dec 2004 21:03:41 -0800, Winston
wrote:
Ignoramus5102 wrote:
I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i

Center drill:
http://www.lathemaster.com/TN_Center_Drills.jpg



Thanks, that's exactly what I am looking for.

i
--

HF was selling sets for $2.99 the other day. I added a set to my order just
on general principles.

--
Bob (Chief Pilot, White Knuckle Airways)

I don't have to like Bush and Cheney (Or Kerry, for that matter) to love
America

"oparr" wrote in message
news:0dDwd.7177$P14.4301@trndny05...
http://www.littlemachineshop.com/pro...ProductID=1230


"Ignoramus5751" wrote in message
...
On Thu, 16 Dec 2004 21:03:41 -0800, Winston
wrote:
Ignoramus5102 wrote:
I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i

Center drill:
http://www.lathemaster.com/TN_Center_Drills.jpg



Thanks, that's exactly what I am looking for.

i
--

Ignoramus5102 wrote in news:cptool$gkp
:

I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i

MSC (mscdirect.com) stocks several brands of spotting drills in a 118
degree point (which of course matches the standard drill point angle). I
have found these to work really well both for drilling on the drill press
and mill and especially for the starting holes for hand held drilling in
alkward places. There are also other point angles available.

bob hoffman wrote:
Ignoramus5102 wrote in news:cptool$gkp
:


I remember that in Russia, there were special drill bits to start
holes. They had a thick shank and sharp (think 40 degrees) conical
end. So they were very rigid and could start a hole precisely where it
was positioned. No "walking". Then you'd switch to whatever drill bit
was necessary to complete drilling.

It was useful for cases where you could not use a punch.

Are there such things in the US, and if so, what are they called?

i


MSC (mscdirect.com) stocks several brands of spotting drills in a 118
degree point (which of course matches the standard drill point angle). I
have found these to work really well both for drilling on the drill press
and mill and especially for the starting holes for hand held drilling in
alkward places. There are also other point angles available.

Yes, but they list only 604 different sizes/types.

http://www1.mscdirect.com/CGI/NNSRAR?PMSECT=0000000626

(Snarky Grin)

--Winston