Drill bit - Woodworking Talk - Woodworkers Forum
 
Thread Tools Display Modes
post #1 of 10 Old 09-18-2011, 11:38 PM Thread Starter
Old Dog Learning Tricks
 
Warnock's Avatar
 
Join Date: Apr 2011
Location: South Dakota
Posts: 406
View Warnock's Photo Album My Photos
Drill bit

Ok Folks

I was drilling some holes for a scroll project and noticed this bit appeared a bit odd.....

Drill bit-drill-bit.jpg

Any ideas if this is supposed to be like this, and if so, why?

Not what I thought a normal drill bit looked like.

Thanks

Never Stop Learning - You Stop Living.
Warnock is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 09-18-2011, 11:47 PM
Senior Member
 
johnnie52's Avatar
 
Join Date: Feb 2009
Location: Tampa, FL - USA
Posts: 3,391
View johnnie52's Photo Album My Photos
It looks like an installer bit. Used to install small wires for telephones. Its able to cut through several materials (except cement or concrete) and penetrate deeply into walls.

If Woodworking is so much fun why isn't it called WoodFUNNING?

I've made a few videos
http://www.youtube.com/user/johnnie52
johnnie52 is offline  
post #3 of 10 Old 09-19-2011, 12:29 AM
The woodwrongs shoppe
 
lawrence's Avatar
 
Join Date: Nov 2009
Location: chadbourn NC
Posts: 665
View lawrence's Photo Album My Photos
lol..I would have though I had destroyed it

lawrence

__________________________________________________ _____________
lawrence is offline  
Sponsored Links
Advertisement
 
post #4 of 10 Old 09-19-2011, 12:45 AM
In History is the Future
 
firemedic's Avatar
 
Join Date: Dec 2010
Location: South Louisiana - Gonzales
Posts: 6,423
View firemedic's Photo Album My Photos
Looks more to me like the cnc end mill got jammed, lol

~tom ...it's better to remain silent and be thought a fool than to open one's mouth and remove all doubt...
firemedic is offline  
post #5 of 10 Old 09-19-2011, 01:17 AM
Senior Member
 
Join Date: Apr 2010
Location: Renton, Wa
Posts: 746
View klr650's Photo Album My Photos
I don't think I've ever seen a drill bit with the middle threads reversed.

Seems like the bit would tend to clog with chips extremely fast because nothing would be able to get past the middle section

Rob

"Sometimes I lie awake at night and wonder - what have I done wrong. And then a voice says to me, 'This is going to take more than one night.'"
-Charley Brown
klr650 is offline  
post #6 of 10 Old 09-19-2011, 01:37 AM
Chester's Gorilla
 
Streamwinner's Avatar
 
Join Date: Nov 2008
Location: Oceania
Posts: 1,279
View Streamwinner's Photo Album My Photos
It's from the "other" dimension.

Streamwinner is offline  
post #7 of 10 Old 09-19-2011, 08:38 AM
Senior Member
 
BigBull's Avatar
 
Join Date: Feb 2010
Location: Overland Park, Kansas
Posts: 611
View BigBull's Photo Album My Photos
I agree with Firemedic. It looks to me like something went wrong in the manufacturing process. This happend more then one would think, but most are culled at the factory and never seen buy Joe Public.

"Dear Lord, lest I continue in my complacent ways, help me to remember that someone died for me today. And if there be war, help me to remember to ask and to answer, 'Am I worth dying for?'"

Eleanor Roosevelt
BigBull is offline  
post #8 of 10 Old 09-19-2011, 11:52 AM
Senior Member
 
dodgeboy77's Avatar
 
Join Date: Mar 2009
Location: Bucks County, PA
Posts: 1,768
View dodgeboy77's Photo Album My Photos
I initially thought it was a really mild steel drill bit that jammed and twisted, causing it to partially "unwind' in places. But I really doubt it could do that and still be straight.

Bill
dodgeboy77 is offline  
post #9 of 10 Old 09-19-2011, 07:53 PM
Senior Member
 
Join Date: Sep 2011
Posts: 576
View Midlandbob's Photo Album My Photos
How well does it drill? Does it clear chips any better than a "normal" bit? Can you cut sideways in thin stock at the junction between the different flute angle? Does it leave a cleaner edge where the threads are downcutting?
Midlandbob is offline  
post #10 of 10 Old 09-19-2011, 10:58 PM Thread Starter
Old Dog Learning Tricks
 
Warnock's Avatar
 
Join Date: Apr 2011
Location: South Dakota
Posts: 406
View Warnock's Photo Album My Photos
Quote:
Originally Posted by Midlandbob View Post
How well does it drill? Does it clear chips any better than a "normal" bit? Can you cut sideways in thin stock at the junction between the different flute angle? Does it leave a cleaner edge where the threads are downcutting?
This drill bit is tiny, somewhere in the 50's range, I haven't miked it, but it is quite small.

With that in mind, the clearing of chips is difficult to see, it manages to cut a hole is 1/2" walnut and ash with no problem, but does seem to come out of the wood full in the groove(s).

I have not tried any sideways cutting whatsoever.

Again, due to the small size, I am unable to answer regarding the cleaner edge.

Never Stop Learning - You Stop Living.
Warnock is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Woodworking Talk - Woodworkers Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Drill rod Shop Dad Power Tools & Machinery 8 07-27-2011 11:38 PM
which drill press should i get? Adamc Power Tools & Machinery 3 05-27-2011 06:28 AM
What is the name of this drill bit? jeffh4 Power Tools & Machinery 8 06-20-2010 10:54 AM
what do i need to drill? Dvoigt Woodturning 7 02-07-2009 10:42 PM
The Right Drill mwoody247 General Woodworking Discussion 4 09-19-2008 09:34 PM

Posting Rules  
You may post new threads
You may 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome