Costco/"Worksmith" 115 drill bit sets saga

[Proctologically Violated©®]

Awl --

Some Qs came up some time ago regarding these drill sets, with most comments
being pretty favorable (including my own), esp considering the price:
$20-39, TiN coated, etc. 135 deg point (above 1/8, iirc), but with 3/8
shanks, above 3/8.

My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.

Goodgawd.....

I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that the
drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!

AND, the drill actually does measure 290!!!

How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.

And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error. The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.

Just an fyi.

I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less..... like an effing accurate
hole, ferchrissakes.

And, of course, I have a *bunch* of these drill sets..... I guess I'll use
them to drill clearance holes for screws.
--
Mr. PV'd

Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??

Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.

Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

[BottleBob]

Post by Proctologically Violated©®
Awl --
Some Qs came up some time ago regarding these drill sets, with most comments
$20-39, TiN coated, etc. 135 deg point (above 1/8, iirc), but with 3/8
shanks, above 3/8.
My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.
Goodgawd.....
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that the
drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.
And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error. The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.
Just an fyi.
I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less..... like an effing accurate
hole, ferchrissakes.
And, of course, I have a *bunch* of these drill sets..... I guess I'll use
them to drill clearance holes for screws.

PV:

If the drill's lips aren't the same length (or angle), then drill may
drill oversize. You could try resharpening them, that should fix the
problem.

[jon_banquer]

        If the drill's lips aren't the same length (or angle), then drill may
drill oversize.  You could try resharpening them, that should fix the
problem.
--
BottleBobhttp://home.earthlink.net/~bottlbob

I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits. This way the
moron can tell everyone what a great deal he got and not tell anyone
he had to reshapen and point split most of his cheap Chinese drill
bits. Maybe your former boss can sell him one of those cheap Chinese
Kurt knock off vises to compliment those Chinese drill bits he got
such a deal on. What a moron.

Darex M5 drill sharpener pics posted on request.

Jon Banquer
San Diego, CA

[Proctologically Violated©®]

Post by BottleBob
If the drill's lips aren't the same length (or angle), then drill may
drill oversize. You could try resharpening them, that should fix the
problem.
--
BottleBobhttp://home.earthlink.net/~bottlbob

I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits. This way the
moron can tell everyone what a great deal he got and not tell anyone
he had to reshapen and point split most of his cheap Chinese drill
bits. Maybe your former boss can sell him one of those cheap Chinese
Kurt knock off vises to compliment those Chinese drill bits he got
such a deal on. What a moron.

Darex M5 drill sharpener pics posted on request.

=======================================

People think I hate Jon Banquer because he gave me (and proly many others)
the STD doctors now call B. coli, for Banquerichiae coli.

Well, I don't hate Jon Banquer.

In fact, when Quallcom finally wakes up and fires Jon Banquer's utterly
useless and still-diseased ass, and he has to move back with his Moms in CT,
I'll pay his busfare to Yonkers, and pay him $25 to mow my front lawn, once
a week.

He can pretend he's operating a gasoline-powered face mill, and he can think
of the height of the grass as the Z axis.

And, I'm sure he'll fuck that up, too, but I'll pay him anyway.
--
Mr. PV'd

Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??

Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.

Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/




Jon Banquer
San Diego, CA

[Cliff]

On Wed, 1 Jul 2009 21:07:04 -0400, "Proctologically Violated©®"

Post by Proctologically Violated©®
In fact, when Quallcom finally wakes up

With Intel now after them?
http://online.wsj.com/article/SB124576988211341997.html
"Intel Makes Another Run at Phones With Nokia"

Where is the 1500 pound gorilla?

[Cliff]

On Wed, 1 Jul 2009 21:07:04 -0400, "Proctologically Violated©®"

Post by Proctologically Violated©®
In fact, when Quallcom finally wakes up and fires Jon Banquer's utterly
useless and still-diseased ass, and he has to move back with his Moms in CT,

I think one of his relatives recently died without changing their
will first. Some follks just put off ....

[jon_banquer]

Post by jon_banquer
I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits. This way the
moron can tell everyone what a great deal he got  and not tell anyone
he had to reshapen and point split most of his cheap Chinese drill
bits. Maybe your former boss can sell him one of those cheap Chinese
Kurt knock off vises to compliment those Chinese drill bits he got
such a deal on. What a moron.
Darex M5 drill sharpener pics posted on request.
Jon Banquer
San Diego, CA

I guess drilling and drills are exempt from Kriss Hogg's "extensive
background in machining and manufacturing processes". For Kriss Hogg's
lies see:

http://www.aperfectdealer.com/nbnews/fall_04_vol3/story4.html

What's next for this world-class liar / loser? No doubt something like
Kriss Hogg buys a "Drill Doctor" and then sues them for malpractice
when it doesn't work like he thinks it should.

Jon Banquer
San Diego, CA

[Proctologically Violated©®]

Post by jon_banquer
I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits. This way the
moron can tell everyone what a great deal he got and not tell anyone
he had to reshapen and point split most of his cheap Chinese drill
bits. Maybe your former boss can sell him one of those cheap Chinese
Kurt knock off vises to compliment those Chinese drill bits he got
such a deal on. What a moron.
Darex M5 drill sharpener pics posted on request.
Jon Banquer
San Diego, CA

I guess drilling and drills are exempt from Kriss Hogg's "extensive
background in machining and manufacturing processes". For Kriss Hogg's
lies see:

http://www.aperfectdealer.com/nbnews/fall_04_vol3/story4.html

What's next for this world-class liar / loser? No doubt something like
Kriss Hogg buys a "Drill Doctor" and then sues them for malpractice
when it doesn't work like he thinks it should.

======================================

Mebbe when this pathologically cocksucking cocksucker learns how to manually
contour my lawn, he'll have the beginnings of an inkling how to manually
contour a cnc machine.

Let's start:
The grass grows up in positive Z;
We'll call the line perpendicalar to the house Y, and the length of the
house X.

The lawnmower blade is about 2 feet in diameter -- figger this as cutter
comp, when mowing around trees.

Can you figger out about how many passes would be required for a lawn X by
Y, Jon Banquer? This would be easier to figger out in a spreadsheet -- oh,
but Jon Banquer doesn't *know how to use an effing spreadsheet*!

Mebbe some forum can give you the answer.

Mebbe you can strategize the mowing of my lawn in Mastercam, for
mower-paths'n'shit....
--
Mr. PV'd

Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??

Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.

Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/






Jon Banquer
San Diego, CA

[IanM]

*GET* *A* *ROOM*
& stop humping each other's leg here.

Post by jon_banquer

Post by jon_banquer
I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits. This way the
moron can tell everyone what a great deal he got and not tell anyone
he had to reshapen and point split most of his cheap Chinese drill
bits. Maybe your former boss can sell him one of those cheap Chinese
Kurt knock off vises to compliment those Chinese drill bits he got
such a deal on. What a moron.
Darex M5 drill sharpener pics posted on request.
Jon Banquer
San Diego, CA

I guess drilling and drills are exempt from Kriss Hogg's "extensive
background in machining and manufacturing processes". For Kriss Hogg's
http://www.aperfectdealer.com/nbnews/fall_04_vol3/story4.html
What's next for this world-class liar / loser? No doubt something like
Kriss Hogg buys a "Drill Doctor" and then sues them for malpractice
when it doesn't work like he thinks it should.
======================================
Mebbe when this pathologically cocksucking cocksucker learns how to manually
contour my lawn, he'll have the beginnings of an inkling how to manually
contour a cnc machine.
The grass grows up in positive Z;
We'll call the line perpendicalar to the house Y, and the length of the
house X.
The lawnmower blade is about 2 feet in diameter -- figger this as cutter
comp, when mowing around trees.
Can you figger out about how many passes would be required for a lawn X by
Y, Jon Banquer? This would be easier to figger out in a spreadsheet -- oh,
but Jon Banquer doesn't *know how to use an effing spreadsheet*!
Mebbe some forum can give you the answer.
Mebbe you can strategize the mowing of my lawn in Mastercam, for
mower-paths'n'shit....

[Snag]

Post by IanM
*GET* *A* *ROOM*
& stop humping each other's leg here.

Took the words right outta my mouth ...

[Proctologically Violated©®]

Post by IanM
*GET* *A* *ROOM*
& stop humping each other's leg here.

We did, some time ago.

How do you think I caught the B. coli spirochete (Banquerichiae coli), the
bacterium that causes Banqueritis??

Good thing I had a sharp doc.

I said, Doc, Lately, I've been especially combattive, irrational and stupid,
megalomaniacal with a martyr complex, babbling constantly, with this strange
urge to memorize everything on the back of cereal boxes, regurgitating sed
memorization to anyone -- listening or not.....

He said, Dude, you got 1st stage Banqueritis, gotta treat dat shit NOW....
otherwise, you'll wind up like Al Capone, or even worse, like Jon Banquer
hisself.

Jon Banquer kicked in nary a nickel for about two years worth of
medications.

'course, he also let his wife do his 7-year bid in jail.....
--
Mr. PV'd

Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??

Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.

Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

Post by IanM

Post by jon_banquer

Post by jon_banquer
I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits. This way the
moron can tell everyone what a great deal he got and not tell anyone
he had to reshapen and point split most of his cheap Chinese drill
bits. Maybe your former boss can sell him one of those cheap Chinese
Kurt knock off vises to compliment those Chinese drill bits he got
such a deal on. What a moron.
Darex M5 drill sharpener pics posted on request.
Jon Banquer
San Diego, CA

I guess drilling and drills are exempt from Kriss Hogg's "extensive
background in machining and manufacturing processes". For Kriss Hogg's
http://www.aperfectdealer.com/nbnews/fall_04_vol3/story4.html
What's next for this world-class liar / loser? No doubt something like
Kriss Hogg buys a "Drill Doctor" and then sues them for malpractice
when it doesn't work like he thinks it should.
======================================
Mebbe when this pathologically cocksucking cocksucker learns how to
manually contour my lawn, he'll have the beginnings of an inkling how to
manually contour a cnc machine.
The grass grows up in positive Z;
We'll call the line perpendicalar to the house Y, and the length of the
house X.
The lawnmower blade is about 2 feet in diameter -- figger this as cutter
comp, when mowing around trees.
Can you figger out about how many passes would be required for a lawn X
by Y, Jon Banquer? This would be easier to figger out in a
spreadsheet -- oh, but Jon Banquer doesn't *know how to use an effing
spreadsheet*!
Mebbe some forum can give you the answer.
Mebbe you can strategize the mowing of my lawn in Mastercam, for
mower-paths'n'shit....

--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
ianm[at]the[dash]malcolms[dot]freeserve[dot]co[dot]uk

[b***@aol.com]

On Wed, 1 Jul 2009 17:23:24 -0700 (PDT), jon_banquer

Post by jon_banquer
I could sell the idiot my close to brand new Darex M5 so he could
resharpen all / most of his cheap Chinese drill bits.

Yep he could sharpen his cheap ass drills on your cheap ass drill
grinder.

--
Tom
http://tinyurl.com/5okkgz

[Buerste]

Post by Proctologically Violated©®
Awl --
Some Qs came up some time ago regarding these drill sets, with most
comments being pretty favorable (including my own), esp considering the
price: $20-39, TiN coated, etc. 135 deg point (above 1/8, iirc), but with
3/8 shanks, above 3/8.
My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.
Goodgawd.....
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that
the drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.
And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error. The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.
Just an fyi.
I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less..... like an effing
accurate hole, ferchrissakes.
And, of course, I have a *bunch* of these drill sets..... I guess I'll
use them to drill clearance holes for screws.
--
Mr. PV'd
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

[Proctologically Violated©®]

Post by Buerste

Post by Proctologically Violated©®
Awl --
Some Qs came up some time ago regarding these drill sets, with most
comments being pretty favorable (including my own), esp considering the
price: $20-39, TiN coated, etc. 135 deg point (above 1/8, iirc), but
with 3/8 shanks, above 3/8.
My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.
Goodgawd.....
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that
the drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.
And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error. The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.
Just an fyi.
I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less..... like an effing
accurate hole, ferchrissakes.
And, of course, I have a *bunch* of these drill sets..... I guess I'll
use them to drill clearance holes for screws.
--
Mr. PV'd
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Did he also walk up-hill to AND from school?
--
Mr. PV'd

Mae West (yer fav CongressShill) to the Gangster (yer fav Lobbyist):
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??

Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.

Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

[Garlicdude]

Post by Proctologically Violated©®

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Did he also walk up-hill to AND from school?

With barb wire for snowshoes?

[b***@aol.com]

On Wed, 1 Jul 2009 19:51:20 -0400, "Proctologically Violated©®"

Post by Proctologically Violated©®

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Did he also walk up-hill to AND from school?

Many years go knew an old guy who owned a drilling job shop. He could
hand grind small drills and be dead nuts on. If I hadn't seen him
regrind the drills myself I wouldn't believe it. For years his shop
ran parts for Cherry Textron on tolerances they couldn't hold in house
for the price he was charging them.

--
Tom
http://tinyurl.com/5okkgz

[Cliff]

On Wed, 1 Jul 2009 19:51:20 -0400, "Proctologically Violated©®"

Post by Proctologically Violated©®

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Did he also walk up-hill to AND from school?

Nope.
The road was downhill both ways.

[Calif Bill]

Post by Buerste

Post by Proctologically Violated©®
Awl --
Some Qs came up some time ago regarding these drill sets, with most
comments being pretty favorable (including my own), esp considering the
price: $20-39, TiN coated, etc. 135 deg point (above 1/8, iirc), but
with 3/8 shanks, above 3/8.
My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.
Goodgawd.....
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that
the drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.
And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error. The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.
Just an fyi.
I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less..... like an effing
accurate hole, ferchrissakes.
And, of course, I have a *bunch* of these drill sets..... I guess I'll
use them to drill clearance holes for screws.
--
Mr. PV'd
Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians, in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Impossible to drill an undersize hole. As the drill will not go through the
hole. Sharpen the end offset as to the center point and you will get a
bigger hole.

[Karl Townsend]

Post by Calif Bill

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will get
a bigger hole.

Well, I've seen it done too. The trick is a rounded corner at the edge of
the cutting edge going to the flute. Like a Racon sharpening
http://www.winsloweng.com/articles/grindPerform_content.htm

Karl

[Calif Bill]

Post by Karl Townsend

Post by Calif Bill

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will get
a bigger hole.

Well, I've seen it done too. The trick is a rounded corner at the edge of
the cutting edge going to the flute. Like a Racon sharpening
http://www.winsloweng.com/articles/grindPerform_content.htm
Karl

But that is like a step drill and the drill is made smaller part way up the
shank.

[Buerste]

Post by Calif Bill

Post by Karl Townsend

Post by Calif Bill

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an
undersize hole. He told me to figure it out...I haven't.

Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will
get a bigger hole.

Well, I've seen it done too. The trick is a rounded corner at the edge of
the cutting edge going to the flute. Like a Racon sharpening
http://www.winsloweng.com/articles/grindPerform_content.htm
Karl

But that is like a step drill and the drill is made smaller part way up
the shank.

Take a fairly good drill and measure it at the tip and every 1/2" down.

[Cliff]

Post by Buerste
Take a fairly good drill and measure it at the tip and every 1/2" down.

What if it's a five-flute drill?

[Jon Elson]

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go through the
hole. Sharpen the end offset as to the center point and you will get a
bigger hole.

Ahh, you CAN drill "undersize", but the hole will
not be round. Generally with 3 lobes, looks a LOT
like a Wankel rotor. If you measure the hole with
a pin gauge, it will measure quite a bit
undersize. If you feed really fast in thin
material, you can drill a hole that the drill will
not easily pass through, or will rattle around in
and catch a lot.
This is more easily seen on drills with relief on
the trailing edge of the side of the flute.
You can pound a drill through thin sheet and get a
hole that looks like a cross section of the drill
bit, and that will be WAY undersize.

Jon

[Calif Bill]

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will get
a bigger hole.

Ahh, you CAN drill "undersize", but the hole will not be round. Generally
with 3 lobes, looks a LOT like a Wankel rotor. If you measure the hole
with a pin gauge, it will measure quite a bit undersize. If you feed
really fast in thin material, you can drill a hole that the drill will not
easily pass through, or will rattle around in and catch a lot.
This is more easily seen on drills with relief on the trailing edge of the
side of the flute.
You can pound a drill through thin sheet and get a hole that looks like a
cross section of the drill bit, and that will be WAY undersize.
Jon

That is not a drilled hole when you run the flutes through like a screw
thread. An oblong hole has to be at least the drill diameter if the drill
spins in the hole. Theaded in the hole all bets are off.

[Buerste]

Post by Calif Bill

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will
get a bigger hole.

Ahh, you CAN drill "undersize", but the hole will not be round.
Generally with 3 lobes, looks a LOT like a Wankel rotor. If you measure
the hole with a pin gauge, it will measure quite a bit undersize. If you
feed really fast in thin material, you can drill a hole that the drill
will not easily pass through, or will rattle around in and catch a lot.
This is more easily seen on drills with relief on the trailing edge of
the side of the flute.
You can pound a drill through thin sheet and get a hole that looks like a
cross section of the drill bit, and that will be WAY undersize.
Jon

That is not a drilled hole when you run the flutes through like a screw
thread. An oblong hole has to be at least the drill diameter if the drill
spins in the hole. Theaded in the hole all bets are off.

With age comes experience and wisdom. You guys are young!

[Calif Bill]

Post by Buerste

Post by Calif Bill

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go
through the hole. Sharpen the end offset as to the center point and
you will get a bigger hole.

Ahh, you CAN drill "undersize", but the hole will not be round.
Generally with 3 lobes, looks a LOT like a Wankel rotor. If you measure
the hole with a pin gauge, it will measure quite a bit undersize. If
you feed really fast in thin material, you can drill a hole that the
drill will not easily pass through, or will rattle around in and catch a
lot.
This is more easily seen on drills with relief on the trailing edge of
the side of the flute.
You can pound a drill through thin sheet and get a hole that looks like
a cross section of the drill bit, and that will be WAY undersize.
Jon

That is not a drilled hole when you run the flutes through like a screw
thread. An oblong hole has to be at least the drill diameter if the
drill spins in the hole. Theaded in the hole all bets are off.

With age comes experience and wisdom. You guys are young!

Not me. Falling apart in the old age. Sitting here cause I can hardly move
the knee. an hour in the MRI machine yesterday did not help.

[Buerste]

Post by Calif Bill

Post by Buerste

Post by Calif Bill

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go
through the hole. Sharpen the end offset as to the center point and
you will get a bigger hole.

Ahh, you CAN drill "undersize", but the hole will not be round.
Generally with 3 lobes, looks a LOT like a Wankel rotor. If you
measure the hole with a pin gauge, it will measure quite a bit
undersize. If you feed really fast in thin material, you can drill a
hole that the drill will not easily pass through, or will rattle around
in and catch a lot.
This is more easily seen on drills with relief on the trailing edge of
the side of the flute.
You can pound a drill through thin sheet and get a hole that looks like
a cross section of the drill bit, and that will be WAY undersize.
Jon

That is not a drilled hole when you run the flutes through like a screw
thread. An oblong hole has to be at least the drill diameter if the
drill spins in the hole. Theaded in the hole all bets are off.

With age comes experience and wisdom. You guys are young!

Not me. Falling apart in the old age. Sitting here cause I can hardly
move the knee. an hour in the MRI machine yesterday did not help.

Don't you wish you could just install a Zerk?

[Michael A. Terrell]

Post by Buerste
Don't you wish you could just install a Zerk?

Sure, but then we would have thread after thread as to which natural,
biodegradable lube was better. Bear fat, because its long lasting, or
Chicken fat, because its cheap and a lot easier to get. ;-)

[Buerste]

Post by Michael A. Terrell

Post by Buerste
Don't you wish you could just install a Zerk?

Sure, but then we would have thread after thread as to which natural,
biodegradable lube was better. Bear fat, because its long lasting, or
Chicken fat, because its cheap and a lot easier to get. ;-)
--
You can't have a sense of humor, if you have no sense!

Human fat. It could be extracted from between the ears of democrats.

[Michael A. Terrell]

Post by Buerste

Post by Michael A. Terrell

Post by Buerste
Don't you wish you could just install a Zerk?

Sure, but then we would have thread after thread as to which natural,
biodegradable lube was better. Bear fat, because its long lasting, or
Chicken fat, because its cheap and a lot easier to get. ;-)
--
You can't have a sense of humor, if you have no sense!

Human fat. It could be extracted from between the ears of democrats.

That stuff in rancid, and you have to strain out all the maggots. :(

[Cliff]

On Sat, 04 Jul 2009 17:49:17 -0400, "Michael A. Terrell"

Post by Michael A. Terrell

Post by Buerste

Post by Michael A. Terrell

Post by Buerste
Don't you wish you could just install a Zerk?

Sure, but then we would have thread after thread as to which natural,
biodegradable lube was better. Bear fat, because its long lasting, or
Chicken fat, because its cheap and a lot easier to get. ;-)
--
You can't have a sense of humor, if you have no sense!

Human fat. It could be extracted from between the ears of democrats.

That stuff in rancid, and you have to strain out all the maggots. :(

The turned SureShot's undisclosed location into a guest bedroom.
No maggots left. They all turned into wingers it seems.

[Brother Lightfoot]

Post by Calif Bill

Post by Buerste

Post by Calif Bill

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go
through the hole. Sharpen the end offset as to the center point and
you will get a bigger hole.

Ahh, you CAN drill "undersize", but the hole will not be round.
Generally with 3 lobes, looks a LOT like a Wankel rotor. If you measure
the hole with a pin gauge, it will measure quite a bit undersize. If
you feed really fast in thin material, you can drill a hole that the
drill will not easily pass through, or will rattle around in and catch a
lot.
This is more easily seen on drills with relief on the trailing edge of
the side of the flute.
You can pound a drill through thin sheet and get a hole that looks like
a cross section of the drill bit, and that will be WAY undersize.
Jon

That is not a drilled hole when you run the flutes through like a screw
thread. An oblong hole has to be at least the drill diameter if the
drill spins in the hole. Theaded in the hole all bets are off.

With age comes experience and wisdom. You guys are young!

Not me. Falling apart in the old age. Sitting here cause I can hardly move
the knee. an hour in the MRI machine yesterday did not help.

I had the athroscopic meniscus repair surgery done about 6 months ago on my
right knee it's made a huge diference.

--

[Cliff]

Post by Calif Bill
Impossible to drill an undersize hole.

<Duh>

[Harold and Susan Vordos]

"Calif Bill" <***@ix.netcom.com> wrote in message news:***@earthlink.com...
snip---

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will get
a bigger hole.

No, it isn't. It's not all that uncommon.

Harold

[Cliff]

Post by Harold and Susan Vordos
snip---

Post by Calif Bill
Impossible to drill an undersize hole. As the drill will not go through
the hole. Sharpen the end offset as to the center point and you will get
a bigger hole.

No, it isn't. It's not all that uncommon.
Harold

When the OD is less than the ID ....

[cncmillgil]

Post by Buerste

Post by Proctologically Violated©®
Awl --
Some Qs came up some time ago regarding these drill sets, with most
comments being pretty favorable (including my own), esp considering the
price: $20-39, TiN coated, etc.  135 deg point (above 1/8, iirc), but with
3/8 shanks, above 3/8.
My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.
Goodgawd.....
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that
the drilled holes were coming out at  .304 -- !!!!   Holy shit......
  WITH spotting!!  In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.
And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error.  The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.
Just an fyi.
I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less.....  like an effing
accurate hole, ferchrissakes.
And, of course, I have a *bunch* of these drill sets.....  I guess I'll
use them to drill clearance holes for screws.
--
Mr. PV'd
    Hey, Big Boy, is that a wad (of cash) in yer pocket, or are you just
glad to see me??
Experiment on Homo Sapiens -- CEOs, Lawyers, and Politicians,  in
particular.
Spare the animals.
Click here every day to feed an animal that needs you today.
www.theanimalrescuesite.com/

My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole.  He told me to figure it out...I haven't.

Ever try drilling, opening up, a hole in titanium, say a 1/32"? good
luck.
Whats the longest hole you have drilled? non critical, like mold water
lines? gun drill machines don't count.
Drill doctor? Darex? what about a Sterling drill sharper? Now thats a
drill sharpner.
For my home drill set, I ground hex's on the shanks on all drills
above 3/8" sweet no chuckey needed.

======================================================
______
/_____/\ Best Regards,
/____ \\ \ Gil Pawl
/_____\ \\ / HOLDZEM©®
/_____/ \/ / /
/_____/ / \//\ West Chicago, IL
\_____\//\ / / USA
\_____/ / /\ /
\_____/ \\ \
\_____\ \\
\_____\/

======================================================

[Michael A. Terrell]

Post by Buerste
My uncle could hand grind a drill bit that would drill an oversize hole,
regrind it and drill an exact hole and regrind it and drill an undersize
hole. He told me to figure it out...I haven't.

Come on, Tom. He was using rubber drill bits. ;-)

[Kirk Gordon]

Post by Proctologically Violated©®
Awl --
Some Qs came up some time ago regarding these drill sets, with most comments
$20-39, TiN coated, etc. 135 deg point (above 1/8, iirc), but with 3/8
shanks, above 3/8.
My main criteria was longevity, and they seem to last OK, overall
quality/case seemed decent.
Never thought to check them via measuring the holes they drilled.
Goodgawd.....
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that the
drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.
And yet, some bit sizes drill close to their size, so you cain't even
*predict* the error. The problem *seems* to be particularly bad on the
letter drills, judging from previous travails that I had not pegged to
regularly errant bits.
Just an fyi.
I guess the moral to the story is, You don't always get what you pay for,
but if you don't pay, the odds much much less..... like an effing accurate
hole, ferchrissakes.
And, of course, I have a *bunch* of these drill sets..... I guess I'll use
them to drill clearance holes for screws.

A drill doesn't center itself with its point. It centers itself
wherever the forces from the cutting edges come into balance. If the
lip heights, or the lengths and angles of the cutting edges, aren't
identical, then the drill cuts off center, and effectively bores the
hole oversize. If you have a good grinder and like playing
trigonometry, you can do this on purpose with some remarkably reliable
results.

Making a drill cut undersize is more difficult. You have to fix it
so the different lengths or angles produce cutting edges that aren't the
same distance ahead of center.

Despite what JB might think, a Darex grinder is a really good way to
make drills that DON'T cut to size, precisely because it can't repeat
the lip heights. And regrinding your drills means you lose all that
nice gold coating you paid for. If you have any kind of cutter grinder,
you can touch them up yourself, albeit slowly and in low volume, and get
better results than the average Chinese manufacturer. Otherwise, since
the drills themselves are probably too cheap to justify the cost of
quality resharpening service, just use them for rough stuff and buy
better drills when you need to form tap a hole.

KG

[Jon Elson]

Post by Proctologically Violated©®
I was form tapping 5/16-18 holes, which requires an L drill (.290), and
after some peculiarities with the inserted set screws, I determined that the
drilled holes were coming out at .304 -- !!!! Holy shit......
WITH spotting!! In a Fadal!!!!!
AND, the drill actually does measure 290!!!
How does a .290 drill that actually measures .290 drill a .304 hole??????
With no ostensible wobble, or other defects.

Oh, it IS wobbling, for sure. It is a well-known
fact that drill bits drill oversize.
How much oversize can be VERY variable! Feedrate
can make a big difference.
You will often see the entry start out triangular,
or sometimes pentagonal, and then smooth out
somewhat once the drill is half a diameter or so
deep. If you need a hole to be on size, you drill
undersize and ream. .014" oversize seems like a
greater amount of oversize than I'm used to, but I
see it all the time, and compensate if needed.

Jon

[Salinadow]

replying to , Salinadow wrote:
My work smith drill has a sticky feel

--
for full context, visit https://www.polytechforum.com/metalworking/costco-worksmith-115-drill-bit-sets-saga-187502-.htm