Thread: Tap removal

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  1. #11
    Ok after making this for a HTD belt.Click image for larger version. 

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ID:	23701 upon drilling & tapping for the grub screws the tap broke full depth so I had a go with alum. Click image for larger version. 

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    it took 500g of alum and 12 hours on the induction hob (the dish was on a piece of 3/8 steel plate) in two sessions at just below boiling point and having to keep it topped up with water ever 45min.

    Result tap was dissolved completely but did discolour the aly a bit, I could have made a new one quicker but wanted to try out the procedure. If I had to do it again I would have use a much deep container and suspended the part on a copper wire.
    ..Clive
    The more you know, The better you know, How little you know

  2. #12
    Doddy's Avatar
    Lives in Preston, United Kingdom. Last Activity: 5 Hours Ago Has been a member for 4-5 years. Has a total post count of 273. Received thanks 28 times, giving thanks to others 9 times.
    Quote Originally Posted by Clive S View Post
    12 hours on the induction hob
    Your not married, are you!?

    Mine (the wife) complains if I even try to cure dry-film solder mask in the oven.

    Women!

  3. #13
    Quote Originally Posted by Clive S View Post
    If I had to do it again I would have use a much deep container and suspended the part on a copper wire.
    This -

    https://www.youtube.com/watch?v=bhzbpDgTvXU

    Use a 3L pop bottle to keep it topped up unattended
    You think that's too expensive? You're not a Model Engineer are you? :D

  4. #14
    Quote Originally Posted by Doddy View Post
    Your not married, are you!?

    Mine (the wife) complains if I even try to cure dry-film solder mask in the oven.

    Women!
    Ah Yes, You need somebody to keep an eye on it to make sure it was topped up
    ..Clive
    The more you know, The better you know, How little you know

  5. #15
    Nice post Clive glad it worked out. You might remember me messing about with alum to remove a broken tap without much success. I think keeping it hot must have helped you which I think you advise me at the time (?) but I couldn't get near the hob

    Luckily I don't break taps any more (ahem) . . .
    Building a CNC machine to make a better one since 2010 . . .
    MK1 (1st photo), MK2, MK3, MK4

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