<div dir="ltr"><div><span class="gmail-st"><em>EDM</em> – Electro Discharge Machining</span></div><div><span class="gmail-st">There is an old writing rule that says that you shouldn't use an<span class="gmail-st"><em></em> acronym or an initialism in an article without first giving a definition of the letters involved. After doing that you are then allowed to use the letters abbreviation constantly even to the point of silliness if you want and all is fine... :-) Most of us (myself included) break this rule constantly. One example is "PTO" = Power Take Off. That is pretty safe on an old tractor group. If you were writing for a group of pie repair shop owners you should probably pre-define it first.</span></span></div><div><span class="gmail-st"><span class="gmail-st">I'm not really questioning James use of EDM here, we as a group define the word casual, but I took that link... I hunted all over their site and could not find the initialism defined there. I Googled it and had to look at several returns to find it there. Obviously it is only a household word among a fairly limited group of engineers and machinist. Why would they not define it up front on their site? I suppose some of it is that most sites are created by computer geeks who are not always journalist.</span></span></div><div><span class="gmail-st"><span class="gmail-st">Back in my data processing days we discovered that the systems analyst guys were horrible at writing instruction manuals for clients to use when preparing data input. They knew their end of it but just couldn't connect with the customers. I became the interface between them and the customers.<br></span></span></div><div><span class="gmail-st"><span class="gmail-st">While I'm here I'll insert one of my favorite gripes. "Nothing should go on the internet that is not dated up front. I hate it when I'm researching and can't find a date on an article then find that the article is 25 years old and the information badly out of date... Especially so on medical information that keeps evolving.<br></span></span></div><div><span class="gmail-st"><span class="gmail-st">And now back to old tractors. :-)<br></span></span></div><div><span class="gmail-st"><span class="gmail-st"><br></span></span></div><div><span class="gmail-st"><span class="gmail-st"><br></span></span></div><div><span class="gmail-st"><span class="gmail-st">.<br></span></span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Oct 27, 2019 at 9:03 PM James Peck <<a href="mailto:jamesgpeck@hotmail.com">jamesgpeck@hotmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal">Probably 25 years or so ago, an article discussed a homebrew low tech EDM a man had built to EDM a broken tap out of the aluminum block or head of a small engine. The article may have appeared in “Home Shop Machinist”.
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<p class="MsoNormal">The downside is that the setup may have only worked in the down direction.
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<p class="MsoNormal"><a href="https://www.makino.com/machine-technology/machines/edm-hole-drilling" target="_blank">https://www.makino.com/machine-technology/machines/edm-hole-drilling</a><u></u><u></u></p>
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<p class="MsoNormal"><b>[</b>James] How did your experiment using an EDM sold only to burn holes in hard materials work?<u></u><u></u></p>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>-- <br><br>Francis Robinson<br>aka "farmer"<br>Central Indiana USA<br><a href="mailto:robinson46176@gmail.com" target="_blank">robinson46176@gmail.com</a><br><br><br><br><br><br><br><br><br></div></div></div>