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drill bit point angle

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drill bit point angle

Posted: Sat Feb 18, 2012 9:15 am
by Jesse Jenks
I can't seem to find anything other than 135 degree points. The book I got
(Standard Aircraft Construction) sais to use 118 for aluminum. Any alternate
opinions on this, or sources for 118 points online? I ordered a 1-60 index,
118 degree, HSS from a local tool store, but their individual bits are on
the pricey side. I also got a 1-60 cobalt index from ebay. I just wanted to
get some extra #40, 30, and 10 , and 6"/12" lengths in HSS.

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drill bit point angle

Posted: Sat Feb 18, 2012 9:15 am
by Wayne G. O'Shea
I just buy Butterfield "jobber" bits in packages of 10 or 12 from the local
machinery supply house. Cheap enough that you don't give a second thought to
sharpening and just throw them out when they stop cutting!

Stop worrying, start making holes!! :o))

Wayne

----- Original Message -----
From: "Jesse Jenks" <jessejenks@hotmail.com>
To: <murphy-rebel@dcsol.com>
Sent: Sunday, May 16, 2004 5:47 PM
Subject: drill bit point angle

I can't seem to find anything other than 135 degree points. The book I got
(Standard Aircraft Construction) sais to use 118 for aluminum. Any
alternate
opinions on this, or sources for 118 points online? I ordered a 1-60
index,
118 degree, HSS from a local tool store, but their individual bits are on
the pricey side. I also got a 1-60 cobalt index from ebay. I just wanted
to
get some extra #40, 30, and 10 , and 6"/12" lengths in HSS.

_________________________________________________________________
Check out the coupons and bargains on MSN Offers!
http://youroffers.msn.com
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drill bit point angle

Posted: Sat Feb 18, 2012 9:16 am
by Jesse Jenks
Great info. Thanks guys.
Jesse

From: Drew Dalgleish <drewjan@cabletv.on.ca>
Reply-To: <murphy-rebel@dcsol.com>
To: murphy-rebel@dcsol.com
Subject: Re: drill bit point angle
Date: Thu, 20 May 2004 11:11:42 -0400

Out here in the sticks it's tough to find numbered drill bits so instead of
using #40 bits I just bought 3/32"bits all you're doing with the small size
is making a hole for a cleco anyway.
Drew

At 09:48 AM 5/20/2004 -0400, you wrote:
Jesse

I prefer the 118* split points for #40 bits as they wander less when
making the initial hole for me. Not an issue for drilling out
pre-punched holes however which is mostly what you will be doing. I
think they are a tad faster too but that could just be because some were
from different manufacturers. Definately buy the #40 bits 10 or 20 at a
time. I've used at least 50 of them and maybe half as many #30.

I haven't noticed much difference between 118* and 135* bits in the #30
size.

I think I did the whole airframe with only about 3 each of the #40 and
#30 6" bits. One each of the 12" #40, #30, and #11 although I think I
have a spare of each somewhere.

I have purchased from KBC machinery, DoAll, and a local machinery
supplier. They all had a range of qualities and prices available.

Ken

Jesse Jenks wrote:
I can't seem to find anything other than 135 degree points. The book I
got
(Standard Aircraft Construction) sais to use 118 for aluminum. Any
alternate
opinions on this, or sources for 118 points online? I ordered a 1-60
index,
118 degree, HSS from a local tool store, but their individual bits are
on
the pricey side. I also got a 1-60 cobalt index from ebay. I just
wanted
to
get some extra #40, 30, and 10 , and 6"/12" lengths in HSS.


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Drew




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drill bit point angle

Posted: Sat Feb 18, 2012 9:16 am
by klehman
Jesse

I prefer the 118* split points for #40 bits as they wander less when
making the initial hole for me. Not an issue for drilling out
pre-punched holes however which is mostly what you will be doing. I
think they are a tad faster too but that could just be because some were
from different manufacturers. Definately buy the #40 bits 10 or 20 at a
time. I've used at least 50 of them and maybe half as many #30.

I haven't noticed much difference between 118* and 135* bits in the #30
size.

I think I did the whole airframe with only about 3 each of the #40 and
#30 6" bits. One each of the 12" #40, #30, and #11 although I think I
have a spare of each somewhere.

I have purchased from KBC machinery, DoAll, and a local machinery
supplier. They all had a range of qualities and prices available.

Ken

Jesse Jenks wrote:
I can't seem to find anything other than 135 degree points. The book I got
(Standard Aircraft Construction) sais to use 118 for aluminum. Any alternate
opinions on this, or sources for 118 points online? I ordered a 1-60 index,
118 degree, HSS from a local tool store, but their individual bits are on
the pricey side. I also got a 1-60 cobalt index from ebay. I just wanted to
get some extra #40, 30, and 10 , and 6"/12" lengths in HSS.


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drill bit point angle

Posted: Sat Feb 18, 2012 9:16 am
by Drew Dalgleish
Out here in the sticks it's tough to find numbered drill bits so instead of
using #40 bits I just bought 3/32"bits all you're doing with the small size
is making a hole for a cleco anyway.
Drew

At 09:48 AM 5/20/2004 -0400, you wrote:
Jesse

I prefer the 118* split points for #40 bits as they wander less when
making the initial hole for me. Not an issue for drilling out
pre-punched holes however which is mostly what you will be doing. I
think they are a tad faster too but that could just be because some were
from different manufacturers. Definately buy the #40 bits 10 or 20 at a
time. I've used at least 50 of them and maybe half as many #30.

I haven't noticed much difference between 118* and 135* bits in the #30
size.

I think I did the whole airframe with only about 3 each of the #40 and
#30 6" bits. One each of the 12" #40, #30, and #11 although I think I
have a spare of each somewhere.

I have purchased from KBC machinery, DoAll, and a local machinery
supplier. They all had a range of qualities and prices available.

Ken

Jesse Jenks wrote:
I can't seem to find anything other than 135 degree points. The book I got
(Standard Aircraft Construction) sais to use 118 for aluminum. Any
alternate
opinions on this, or sources for 118 points online? I ordered a 1-60
index,
118 degree, HSS from a local tool store, but their individual bits are on
the pricey side. I also got a 1-60 cobalt index from ebay. I just wanted
to
get some extra #40, 30, and 10 , and 6"/12" lengths in HSS.


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Drew




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