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Re: [hobbicast] Re: Parting Dust question

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  • rgsparber@aol.com
    Gary, Can you say more about how to do proper rapping ? I m fairly confident that I m not doing it right. Thanks, Rick Sparber rgsparber@AOL.com web site:
    Message 1 of 31 , Jan 5, 2008
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      Can you say more about how to do "proper rapping"? I'm fairly confident that
      I'm not doing it right.


      Rick Sparber
      web site: http://rick.sparber.org

      In a message dated 1/5/2008 10:25:48 A.M. US Mountain Standard Time,
      lekvoldgl@... writes:

      and proper rapping will allow the pattern to just slide out as if I had used
      5 degrees of draft.

      **************Start the year off right. Easy ways to stay in shape.
    • Stone Tool
      An excellent and most informative thread........ I m getting lots of good out of it........ Howard
      Message 31 of 31 , Jan 8, 2008
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        An excellent and most informative thread........ I'm getting lots of
        good out of it........


        On Tue, 2008-01-08 at 05:54 +0000, Gary Lekvold wrote:
        > Hi Rick,
        > I never dreamed this thread would grow the way it has, but that is a
        > good thing, if it helps someone. A couple of points re: my initial
        > description. I said I rap left and right and then up and down. What I
        > should have said was, I rap in the X axis and then in the Y axis. In
        > many cases I rap all around in a circular motion. Once in a great
        > while I find it useful to rap very lightly in the Z axis, but not
        > often. What David said about gently wrapping while pulling up on the
        > draw screw is very important. It is also important to realize that you
        > only want to enlarge the cavity by a few thousandths of an inch. We
        > are not talkiing about fractions of an inch here. these are some of
        > the subtleties and fine points I was referring to at first. Just an
        > add-on thought. I bought the casting book by Ammen, at about the same
        > time I bought his plating book. I have never in my life seen how-to
        > books so full of gross mistakes and misinformation. I will not be
        > buying any more of his books.
        > Gary
        > --- In hobbicast@yahoogroups.com, rgsparber@... wrote:
        > >
        > > John,
        > >
        > > Thanks for the additional wisdom. I will have a lot of new
        > techniques to try
        > > on my next casting session.
        > >
        > > Rick
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