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How to remove a broken tap

Easy ways to clean parts, remove broken bolts, etc.
Little Indy
10+ Years
10+ Years
Posts: 286
Joined: Thu Nov 04, 2004 11:50 pm
eBay ID: falco-de-fiume
Location: NE, Cheney

How to remove a broken tap

Postby Little Indy » Wed Dec 29, 2004 8:50 am

A broken tap can be castrophy :oops: as they are made of very hard steel harder than most drill bits but:

  1. Walton Company makes a broken tap exractor which has long fingers and is inserted into the grooves of the tap (makes sure you know if you need a three or four finger extractor] Sources can be found on net.
  2. Bring to machine shop and have them remove tap with plasma cutter.
  3. Bring to machine shop and have them remove tap with 2 to 5 mixture of nitric acid and water. If you do it, be careful. This often just loosens tap.
  4. Put dry ice into rubbing alcohol in a thermos bottle and then put several drops of -20 degree alcohol onto the broken tap with a dropper and strike tap smartly and extract pieces. Be careful with dry ice.
  5. Drill hole in broken tap with a diamond bit; in hole insert square extractor.
  6. Weld a nut onto tap and turn nut. Keep welding nut onto tap and turning until broken tap in removed.

I hope others post the methods they have tried. :)
Si hoc legere scis,nimium eruditionis habes.

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