Wonky threads using die

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Wonky threads using die

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  • #572988
    Steve355
    Participant
      @steve355

      Well, I sorted it out for now…

      I got a ER25 collet that fitted the lathe, and used the tailstock to hold the die stock in position. After a few goes I got fed up with turning by hand and engaged the motor on the lowest speed.

      It worked pretty well, maybe not perfect, but pretty close and much better than trying to thread on my voice. I have some steel rod coming to make a die holder at the weekend.

      It worked pretty well, maybe not perfect, but pretty close and much better than trying to thread on my voice. I have some steel rod coming to make a die holder at the weekend.

      see below, old bent one and new not bent one.

      Thanks to everyone who gave me advice.

      99d7f4da-fdd5-4790-b43d-d46925480050.jpeg

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      #573006
      AJAX
      Participant
        @ajax
        Posted by Steve355 on 23/11/2021 19:52:11:

        Posted by Howard Lewis on 20/11/2021 21:11:15:

        You can make or buy. Making can be a useful learning exercise, and give confidence in using the lathe.

        (

        right, I have changed my mind, i am making a tailstock die holder. The reason I was hesitant was that I am not confident in turning a morse taper. But I realised I have an MT2 collet which a die holder could easily be fitted to. If I can’t turn a die holder shaped thing with a rod sticking out the back I may as well give up.

        What is the handle that sticks out if the back of the die holders for?

        It's easy to turn a Morse taper if you already have a male taper you can copy. Set a dial guage on the tool post and rotate the compound slide until it tracks the taper accurately. If you do it that way you don't need to worry about the taper angle dimension.

        #573014
        not done it yet
        Participant
          @notdoneityet

          Morse taper blank end arbors are available (Arceurotrade from just over a fiver?). These are accurately ground to size and sold for making items such as you are proposing. Morse tapers need to be precise (fitted using engineers blue) preferably with a hard ground surface. I don’t make Morse tapers ‘cos they are cheap and accurate – I always try to keep a couple in stock for making arbors as and when required (otherwise shipping adds to the cost).

          I have one commercial Morse taper (my last ever purchase from ‘ban good’ for anything that must not be a substandard item). It would have destroyed anything that was associated with it, if used.

          Ajax might well say it is easy. But it does require a bit of expertise when setting the taper angle, so not recommended (by me) for a beginner.

          #573035
          ega
          Participant
            @ega

            Setting the topslide to a precise angle can be frustrating – repeatedly this way and that (or "et patati et patate" as the French have it) – but the problem can be simply eased with a GHT-type screw adjuster:

            b0010136.jpg

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