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Mail Archives: geda-user/2017/03/14/16:00:19

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Subject: Re: [geda-user] [pcb-rnd] tEDAx footprint load support
References: <alpine DOT DEB DOT 2 DOT 00 DOT 1703130747230 DOT 27212 AT igor2priv>
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To: geda-user AT delorie DOT com
From: "Girvin Herr (gherrl AT fastmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Message-ID: <7000e948-3f4a-5676-d1ec-6017daad0cdc@fastmail.com>
Date: Tue, 14 Mar 2017 12:55:09 -0700
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On 03/14/2017 12:31 PM, Chad Parker (parker DOT charles AT gmail DOT com) [via 
geda-user AT delorie DOT com] wrote:
>
>          - Holes without plating is common.
>
>
>     Common, but not essential. The same footprint could work fine with
>     plated holes.
>
>
> Not always. In much of my work I'm not allowed to use pth for any kind 
> of mounting hole, which would include holes for screwing into things 
> like heat sinks and packages that might be included in a footprint.
>
>
> --Chad
+1
I was in the aerospace industry for years and I agree.  Mounting holes 
shall not be plated.  I no longer remember why.  Probably due to a 
failure or two traced to the pth mounting holes - A reliability issue.  
Ignoring history and thinking outside the box is not always a good thing 
to do.

Girvin Herr


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    <div class="moz-cite-prefix">On 03/14/2017 12:31 PM, Chad Parker
      (<a class="moz-txt-link-abbreviated" href="mailto:parker DOT charles AT gmail DOT com">parker DOT charles AT gmail DOT com</a>) [via <a class="moz-txt-link-abbreviated" href="mailto:geda-user AT delorie DOT com">geda-user AT delorie DOT com</a>] wrote:<br>
    </div>
    <blockquote
cite="mid:CAJZxidB3-Xy=6yV2+18NLN+nL5=yJfRjtCvuz3za5R=TFv0uQA AT mail DOT gmail DOT com"
      type="cite">
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        <div class="gmail_extra">
          <div class="gmail_quote">
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex"><span
                class="">
                <blockquote class="gmail_quote" style="margin:0 0 0
                  .8ex;border-left:1px #ccc solid;padding-left:1ex"> -
                  Holes without plating is common.<br>
                </blockquote>
                <br>
              </span>
              Common, but not essential. The same footprint could work
              fine with plated holes. <br>
            </blockquote>
            <div> <br>
            </div>
            <div>Not always. In much of my work I'm not allowed to use
              pth for any kind of mounting hole, which would include
              holes for screwing into things like heat sinks and
              packages that might be included in a footprint.<br>
            </div>
            <br>
            <br>
            <div>--Chad<br>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    +1<br>
    I was in the aerospace industry for years and I agree.  Mounting
    holes shall not be plated.  I no longer remember why.  Probably due
    to a failure or two traced to the pth mounting holes - A reliability
    issue.  Ignoring history and thinking outside the box is not always
    a good thing to do.<br>
    <br>
    Girvin Herr<br>
    <br>
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