Welcome to the The Garage Journal Board forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   The Garage Journal Board > The Tools > General Tool Discussion

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-06-2009, 10:53 PM   #1
HossHoffer
Junior Member
 
Join Date: Aug 2009
Location: Aurora, CO
Posts: 4
Default Gun Barrell Drill bits

Hey, I work as an acft maint tech and just recently retired early from a major airline. One of the irreplaceable tools that I had was what we called gun barrel drill bits. I am down to the last few and can't find a source, even on-line. Does anyone knows where I can pick up a few of these beauties. They are made to cut only on the tip so as not to mess up any pre-existing holes. I'll bring some home from work and post a pic tomorrow.

Thanks, Hoss
HossHoffer is offline   Reply With Quote
Old 10-07-2009, 04:59 PM   #2
rodm1
Senior Member
 
Join Date: Feb 2008
Posts: 1,968
Default Re: Gun Barrell Drill bits

You will probable have better luck reposting at the like below. If you find a source with a web sight please post it here.


http://www.practicalmachinist.com/cg...ultimatebb.cgi
rodm1 is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 10-07-2009, 05:22 PM   #3
A_Pmech
Super Moderator
 
A_Pmech's Avatar
 
Join Date: May 2007
Location: IL
Posts: 6,573
Default Re: Gun Barrell Drill bits

Let's see a photo!

Gun drills and aircraft extension drills are common.

Never heard of a "gun barrel" drill, however.
A_Pmech is offline   Reply With Quote
Old 10-07-2009, 07:18 PM   #4
HossHoffer
Junior Member
 
Join Date: Aug 2009
Location: Aurora, CO
Posts: 4
Default Re: Gun Barrell Drill bits

Whoops, forget to bring them home to photograph. I might look for gun drills though. Thanks for the link also. Will try and get those photos tomorrow.
HossHoffer is offline   Reply With Quote
Old 10-07-2009, 07:28 PM   #5
arkangel06
Banned
 
Join Date: Jan 2009
Location: ontario
Posts: 4,659
Send a message via MSN to arkangel06
Default Re: Gun Barrell Drill bits

We need pictures.....
arkangel06 is offline   Reply With Quote
Old 10-07-2009, 07:32 PM   #6
Elroy
Banned
 
Join Date: Oct 2005
Location: kentucky
Posts: 3,467
Default Re: Gun Barrell Drill bits

Deep hole drilling requires more than "special" bits. It also incorporates the proper guide and bushing system.


http://www.carrlane.com/Catalog/inde...3C3B2853514054

Last edited by Elroy; 10-07-2009 at 07:34 PM.
Elroy is offline   Reply With Quote
Old 02-28-2010, 03:03 AM   #7
foul_ball
Senior Member
 
foul_ball's Avatar
 
Join Date: May 2008
Location: Everett, WA
Posts: 112
Default Re: Gun Barrell Drill bits

http://www.henchman.com.au/documents..._catalogue.pdf

^see page 14, or (6 of 9)
foul_ball is offline   Reply With Quote
Old 02-28-2010, 09:21 AM   #8
ZRX61
Senior Member
 
ZRX61's Avatar
 
Join Date: Aug 2006
Location: AeroSpace Valley, SoCal
Posts: 11,608
Default Re: Gun Barrell Drill bits

You mean the bits that are 12-18in long but the flutes are only 1/2in at the business end?
ZRX61 is offline   Reply With Quote
Old 02-28-2010, 10:53 AM   #9
Elroy
Banned
 
Join Date: Oct 2005
Location: kentucky
Posts: 3,467
Default Re: Gun Barrell Drill bits

Maybe this video will clarify deep hole "gun" drilling:

http://www.dmetool.com/video.htm
Elroy is offline   Reply With Quote
Old 03-04-2010, 03:41 AM   #10
foul_ball
Senior Member
 
foul_ball's Avatar
 
Join Date: May 2008
Location: Everett, WA
Posts: 112
Default Re: Gun Barrell Drill bits




He's talking about margin-less drills with a very shallow cutting angle. The term "gunbarrel drill" is basically a nick name. These drills allow an airframe mechanic to back drill through existing fastener holes into a new part without enlarging the aforementioned holes. Personally, I can't find them anywhere except at work. I don't know if my employer makes them in-house or has contracted with a vendor.
foul_ball is offline   Reply With Quote
Old 03-04-2010, 10:29 AM   #11
Packard V8
Senior Member
 
Join Date: Mar 2009
Location: Spokane, WA
Posts: 3,697
Default Re: Gun Barrell Drill bits

Yet another reason to lament the demise of Boeing Surplus. We formerly were able to buy them buy the pound. On some military contracts, the tooling couldn't be transferred to any other use and much new stuff we taxpayers bought were sold as surplus.

thnx, jack vines
Packard V8 is offline   Reply With Quote
Old 03-04-2010, 02:27 PM   #12
foul_ball
Senior Member
 
foul_ball's Avatar
 
Join Date: May 2008
Location: Everett, WA
Posts: 112
Default Re: Gun Barrell Drill bits

Quote:
Originally Posted by Packard V8 View Post
Yet another reason to lament the demise of Boeing Surplus. We formerly were able to buy them buy the pound. On some military contracts, the tooling couldn't be transferred to any other use and much new stuff we taxpayers bought were sold as surplus.

thnx, jack vines

looks like there's a few useful things in the online surplus (I'm still sad about the physical surplus location closing though).

https://active.boeing.com/assocprodu...plus/Index.cfm
foul_ball is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 07:19 AM.