Drillbit stuck in rod
Close
Login to Your Account
Page 1 of 2 12 LastLast
Results 1 to 20 of 21
  1. #1
    Join Date
    Sep 2019
    Country
    UNITED STATES
    State/Province
    Alabama
    Posts
    19
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    0

    Lightbulb Drillbit stuck in rod

    Hello! I was drilling a 0.8mm hole in a steel rod, and the drill bit broke inside of the hole when i came through. Any idea on how I could possibly get the drill bit out of the hole? I have tried pulling it out with a tweezer but there isn’t material enough to get a hold of it. I also tried to force it out with another drillbit infront of a hammer, but they all broke.

    Here’s a picture of the rod and the bit stuck in it: Imgur: The magic of the Internet

  2. #2
    Join Date
    Jan 2014
    Location
    Temecula, Ca
    Posts
    3,276
    Post Thanks / Like
    Likes (Given)
    1396
    Likes (Received)
    4258

    Default

    Really? How much do you want to spend to save $.30 worth of material?

  3. #3
    Join Date
    Sep 2019
    Country
    UNITED STATES
    State/Province
    Alabama
    Posts
    19
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    0

    Default

    The steel rod have been machined with multiple holes from the other side that connect to this (final) hole. Remaking everything from scratch will be much work, so I really need to get the bit out..

  4. #4
    Join Date
    Jul 2006
    Country
    UNITED STATES
    State/Province
    Arizona
    Posts
    4,712
    Post Thanks / Like
    Likes (Given)
    18688
    Likes (Received)
    4558

    Default

    Quote Originally Posted by Drilldept View Post
    The steel rod have been machined with multiple holes from the other side that connect to this (final) hole. Remaking everything from scratch will be much work, so I really need to get the bit out..
    EDM the drill bit out or remake the part.

  5. Likes yardbird, MrWhoopee liked this post
  6. #5
    Join Date
    Feb 2014
    Location
    FL
    Posts
    3,419
    Post Thanks / Like
    Likes (Given)
    11685
    Likes (Received)
    3916

    Default

    Is it a carbide drill?

    Get after it with a hammer and a small piece of steel. Break it up into little chunks.

    If it's HSS, get a tiny endmill, peck it out. It's slow, but it works. Make sure to blow the hole out frequently to get the swarf out.

  7. #6
    Join Date
    Sep 2019
    Country
    UNITED STATES
    State/Province
    Alabama
    Posts
    19
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    0

    Default

    It’s HSS. Can I drill it out with a larger (1.5mm HSS) bit?

  8. #7
    Join Date
    Mar 2006
    Country
    PHILIPPINES
    Posts
    2,663
    Post Thanks / Like
    Likes (Given)
    686
    Likes (Received)
    1036

    Default

    Quote Originally Posted by Drilldept View Post
    It’s HSS. Can I drill it out with a larger (1.5mm HSS) bit?
    Perhaps take it to your local machine shop?

  9. #8
    Join Date
    Nov 2013
    Country
    UNITED STATES
    State/Province
    Utah
    Posts
    4,876
    Post Thanks / Like
    Likes (Given)
    1289
    Likes (Received)
    2755

    Default

    Quote Originally Posted by Drilldept View Post
    It’s HSS. Can I drill it out with a larger (1.5mm HSS) bit?
    Actually it works better if you try using a Drill made out of Marshmallow.

    Since you broke it on break through.....Endmill the break out with a .8mm carbide Tool, until you're into the hole, then punch it out with a punch.

    R

    Careful selecting a username around here, yours implies that you might know the very basics of Drilling and Drills.

  10. Likes eKretz liked this post
  11. #9
    Join Date
    Mar 2011
    Location
    Geneva Illinois USA
    Posts
    6,439
    Post Thanks / Like
    Likes (Given)
    2817
    Likes (Received)
    2521

    Default

    You could cut it out with a 4 flute carbide center cutting end mill. I have done that but you have to be very careful or the end mill will shatter.

    Tom

  12. #10
    Join Date
    Aug 2006
    Location
    N.W. Ark.
    Posts
    411
    Post Thanks / Like
    Likes (Given)
    241
    Likes (Received)
    71

    Default

    Quote Originally Posted by Drilldept View Post
    Hello! I was drilling a 0.8mm hole in a steel rod, and the drill bit broke inside of the hole when i came through. Any idea on how I could possibly get the drill bit out of the hole? I have tried pulling it out with a tweezer but there isn’t material enough to get a hold of it. I also tried to force it out with another drillbit infront of a hammer, but they all broke.

    Here’s a picture of the rod and the bit stuck in it: Imgur: The magic of the Internet
    if the length of the piece is not critical put in lathe and shave off what you need to grab the bit with pliers or vise grip and rotate to the left back the bit out

  13. Likes tech610 liked this post
  14. #11
    Join Date
    Nov 2014
    Country
    UNITED STATES
    State/Province
    Florida
    Posts
    4,511
    Post Thanks / Like
    Likes (Given)
    1730
    Likes (Received)
    2161

    Default

    Quote Originally Posted by litlerob1 View Post
    Actually it works better if you try using a Drill made out of Marshmallow.

    Since you broke it on break through.....Endmill the break out with a .8mm carbide Tool, until you're into the hole, then punch it out with a punch.

    R

    Careful selecting a username around here, yours implies that you might know the very basics of Drilling and Drills.
    Maybe he meant Drilderp..?

  15. Likes TeachMePlease, litlerob1 liked this post
  16. #12
    Join Date
    Oct 2016
    Country
    UNITED STATES
    State/Province
    Florida
    Posts
    355
    Post Thanks / Like
    Likes (Given)
    820
    Likes (Received)
    229

    Default

    I would grind off the broken drill flush to the part.

    Use a smaller carbide drill and gently carefully drill down through the center of the broken drill, use Tap magic pro 3 lubricant and clear the chips frequently.

    Clear away cut metal frequently

    Absolute minimum pressure

    Take an hour to do it

    After you bore down through it will almost fall out

    Don't make another part like this the same was, you need to spend more time figuring out what is wrong that you are doing

    Sorry you have to do metric

  17. #13
    Join Date
    Mar 2005
    Country
    UNITED STATES
    State/Province
    Indiana
    Posts
    4,751
    Post Thanks / Like
    Likes (Given)
    1254
    Likes (Received)
    1184

    Default

    I'm with Rob. If it snapped while breaking through just take a small punch and knock it out backwards. Most of the hole is already there, should be easy and the drill should only be tight at the exit point. Just don't use another drill bit as a punch... Could help to mount the punch in an endmill holder or drill chuck to help keep alignment, then use the machine to align it over the hole and push the broken drill out.

  18. #14
    Join Date
    Oct 2005
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    17,683
    Post Thanks / Like

    Default

    Could it be, stuck because of lack of proper lÜÜB ?

    Might be welded in place, and making the part worthless.

    What material ?

    What machine did you drill this on ?

  19. #15
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,247
    Post Thanks / Like
    Likes (Given)
    2561
    Likes (Received)
    1112

    Default

    I have some 1/32" drill bits here if you want to try it again. There are no good to me...and too small to see what I'm doing.

  20. Likes NC Rick liked this post
  21. #16
    Join Date
    Mar 2011
    Location
    Geneva Illinois USA
    Posts
    6,439
    Post Thanks / Like
    Likes (Given)
    2817
    Likes (Received)
    2521

    Default

    Quote Originally Posted by Pathogen View Post
    I would grind off the broken drill flush to the part.

    Use a smaller carbide drill and gently carefully drill down through the center of the broken drill, use Tap magic pro 3 lubricant and clear the chips frequently.

    Clear away cut metal frequently

    Absolute minimum pressure

    Take an hour to do it

    After you bore down through it will almost fall out

    Don't make another part like this the same was, you need to spend more time figuring out what is wrong that you are doing

    Sorry you have to do metric
    Use a flat end end mill. The drill point will cause the drill to wander and break.

    Tom

  22. Likes JohnEvans liked this post
  23. #17
    Join Date
    Sep 2011
    Country
    UNITED STATES
    State/Province
    Virginia
    Posts
    31,210
    Post Thanks / Like
    Likes (Given)
    7561
    Likes (Received)
    9798

    Default

    Quote Originally Posted by Drilldept View Post
    The steel rod have been machined with multiple holes from the other side that connect to this (final) hole. Remaking everything from scratch will be much work, so I really need to get the bit out..
    Like it or not MORE work, yet to get it out and then.. the rod is buggered as well?

    You don't HAVE any of the more reliable means that do not also near-as-dammit ASSURE you will f**k-up the rod in the effort ANYWAY. Don't HAVE the experience, dexterity, machine-tools, nor tooling to improve chances of success.

    Or it would have been OUT, already, drills being dead-easy compared to bustid TAPS!

    QED


    Spark erosion / EDM, specifically - which one usually hires done.

    Can't get that done? Costs too much? Make a new rod and be more CAREFUL.

    If you were not already aware of it, "start over" - small parts more than massive castings, of course - is the preferred professional "cheat", if only because we have the most accurate sense of what it will cost in material and TIME, can plan accordingly and "JFDI" to plan.

    Shit happens.

    Life is always too short and deadlines for delivery always too close to roll-dice on praying, hoping, wishing, whining, masturbating, or other general fucking about at solutions we cannot implement even if we were willing.

  24. Likes NC Rick liked this post
  25. #18
    Join Date
    Sep 2019
    Country
    UNITED STATES
    State/Province
    Alabama
    Posts
    19
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    0

    Default

    Quote Originally Posted by digger doug View Post
    Could it be, stuck because of lack of proper lÜÜB ?

    Might be welded in place, and making the part worthless.

    What material ?

    What machine did you drill this on ?
    QT 4340 chromoly steel. I was using a bench drillpress.

  26. #19
    Join Date
    Sep 2009
    Location
    Phoenix,AZ
    Posts
    1,861
    Post Thanks / Like
    Likes (Given)
    2866
    Likes (Received)
    483

    Default

    Quote Originally Posted by Drilldept View Post
    QT 4340 chromoly steel. I was using a bench drillpress.
    Recipe for failure ! Bench DP ,a sensitive drill press would have been still bad enough ,but much better.I have drilled 1/4MM holes in 1018 using my Hamilton sensitive DP CAREFULLY !

  27. #20
    Join Date
    Oct 2005
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    17,683
    Post Thanks / Like

    Default

    Quote Originally Posted by Drilldept View Post
    QT 4340 chromoly steel. I was using a bench drillpress.
    RPM ?

    coolant ?

    Peck drill ?

    What is your experience level ?

  28. Likes g-coder05 liked this post

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •