July 16, 2018, 02:43:11 am
Welcome, Guest. Please login or register.

Author Topic: Removing broken tap  (Read 1856 times)

teamsandman

  • Roboteer
  • *
  • Posts: 26
    • View Profile
Removing broken tap
« on: February 02, 2015, 06:29:31 pm »
I'm sure others have broken taps... I broke one off flush with the surface in a blind hole in aluminum. Anyone ever get these out again?

MikeNCR

  • Near Chaos Robotics
  • Administrator
  • Roboteer
  • ****
  • Posts: 297
    • View Profile
    • nearchaos.net
Re: Removing broken tap
« Reply #1 on: February 02, 2015, 06:48:10 pm »
If you've gotten it stuck in aluminum it's a lot easier to get it out than if it is steel.

It'll take some patience but this method does work- http://www.tap-die.com/contents/en-uk/d296_Tip_Remove_Broken_Tap_Drill_Reamer_Tap_and_Die_Co.html

You can skip the heat portion but it will take ages.

seangcxq

  • Roboteer
  • *
  • Posts: 40
  • Team Gyroscopic
    • View Profile
Re: Removing broken tap
« Reply #2 on: February 03, 2015, 06:46:06 am »
Yeah I've had it happen. Really easy to fix if you don't mind ruining the finish a bit. Take a Dremel with a cut off tool and cut a groove in the aluminum + tap, then simply unscrew with a flat head

AlexH

  • Roboteer
  • *
  • Posts: 40
  • wedge?
    • View Profile
Re: Removing broken tap
« Reply #3 on: February 03, 2015, 11:50:32 pm »
weld a nut on the exposed part of the tap. it becomes a bolt.

Luke

  • Roboteer
  • **
  • Posts: 54
    • View Profile
    • CMU Combat Robotics
Re: Removing broken tap
« Reply #4 on: March 03, 2015, 10:02:15 pm »
I'm sure others have broken taps... I broke one off flush with the surface in a blind hole in aluminum. Anyone ever get these out again?

Ways of removing it include
-Welding a nut on it
-Drilling out with a left handed kobolt or carbide drill bit
-drilling out then using tap extractor
-Dissolving the tap with nitric acid (Tap X only works with aluminum or other non ferrous metals)
-Drilling out with normal carbide drill bit and picking away remnants
-Die sinker EDM or tap burner (like EDM but just meant for taps)
-Using grinder or dremel to put a slot into it

My favorite method usually is trying to drill it out, getting mad, crying, and then machining the part again....

Team haciM

  • Roboteer
  • *
  • Posts: 15
    • View Profile
Re: Removing broken tap
« Reply #5 on: February 25, 2018, 09:41:57 pm »
I know this is an old thread but if it is not a very small tap you can break it into small pieces with a punch. That is my preferred method.