<p dir="ltr">Yeah a .012" hole is a tough one. EDM would give you a good finish and a true hole. Burr free too. I've contemplated a build of one before. </p>
<div class="gmail_quote">On May 27, 2015 7:20 PM, "david" <<a href="mailto:ainut@knology.net">ainut@knology.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div text="#000000" bgcolor="#FFFFFF">
    just buy some Hilsch vortex tubes.<br>
    <br>
    <br>
    <br>
    <br>
    <div>On 05/27/15 19:18, Jacob Chancery
      wrote:<br>
    </div>
    <blockquote type="cite">
      <p>I should've said Electrical instead of Electrostatic.</p>
      <p> <a href="http://en.m.wikipedia.org/wiki/Electrical_discharge_machining" target="_blank">http://en.m.wikipedia.org/wiki/Electrical_discharge_machining</a></p>
      <p>I want to cut small (0.012” throat diameter) planar de Laval
        nozzles in a piece of 1.5” schedule 10 pipe to spin a garret
        GT1548 turbine.</p>
      <p>So far I've gotten a few no-quotes, a few ”that can't be done”
        and one unofficial ”more than $10,000” responses.</p>
      <div class="gmail_quote">On May 27, 2015 6:44 PM, "Erik Arendall"
        <<a href="mailto:earendall@gmail.com" target="_blank">earendall@gmail.com</a>>
        wrote:<br type="attribution">
        <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
          <p dir="ltr">They are interesting machines. What is your
            purpose for the machine? <br>
          </p>
          <div class="gmail_quote">On May 27, 2015 6:33 PM, "clayton
            pannell" <<a href="mailto:clayton.pannell@gmail.com" target="_blank">clayton.pannell@gmail.com</a>>
            wrote:<br type="attribution">
            <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
              <p dir="ltr">Creates ESD to cut metal</p>
              <div class="gmail_quote">On May 27, 2015 5:00 PM, "Daniel
                Valdez" <<a href="mailto:smeeon@gmail.com" target="_blank">smeeon@gmail.com</a>>
                wrote:<br type="attribution">
                <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                  <div dir="ltr">wait.. is this to cause ESD or to
                    dissipate it? I'm confused and intrigued at the same
                    time. </div>
                  <div class="gmail_extra"><br>
                    <div class="gmail_quote">On Wed, May 27, 2015 at
                      4:51 PM, Jacob Chancery <span dir="ltr"><<a href="mailto:jacob.chancery@gmail.com" target="_blank">jacob.chancery@gmail.com</a>></span>
                      wrote:<br>
                      <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                        <div dir="ltr">Anyone on the list ever built
                          their own EDM machine?
                          <div><br>
                          </div>
                          <div>I'm thinking about buying this starter
                            kit:</div>
                          <div><a href="http://www.homebuiltedmmachines.com/index.php?page=buy&product=pulse_edm_starters_kit" target="_blank">http://www.homebuiltedmmachines.com/index.php?page=buy&product=pulse_edm_starters_kit</a><br>
                          </div>
                          <div><br>
                          </div>
                        </div>
                        <br>
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                    <br clear="all">
                    <div><br>
                    </div>
                    -- <br>
                    <div>Daniel Valdez<br>
                      Audio Insight<br>
                      Huntsville, AL<br>
                      Office <a href="tel:256-885-1995" value="+12568851995" target="_blank">256-885-1995</a><br>
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