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From:	"Chad Parker (parker DOT charles AT gmail DOT com) [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Date:	Tue, 14 Mar 2017 15:31:34 -0400
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Subject:	Re: [geda-user] [pcb-rnd] tEDAx footprint load support
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>
>  - 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.

Question (to all PCB engineers): how often do you rely on the clearance
> value set in a footprint?
>

My clearances are typically defined at the board level by my netlist and my
geometry. I can't think of a time I've ever defined a clearance in a
footprint that wasn't highly specialized.

--Chad

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<div dir=3D"ltr"><div class=3D"gmail_extra"><div class=3D"gmail_quote"><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #c=
cc solid;padding-left:1ex"><span class=3D""><blockquote class=3D"gmail_quot=
e" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">=
=C2=A0- Holes without plating is common.<br>
</blockquote>
<br></span>
Common, but not essential. The same footprint could work fine with plated h=
oles. <br></blockquote><div>=C2=A0<br></div><div>Not always. In much of my =
work I&#39;m not allowed to use pth for any kind of mounting hole, which wo=
uld include holes for screwing into things like heat sinks and packages tha=
t might be included in a footprint.<br></div><div><br></div><blockquote cla=
ss=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pa=
dding-left:1ex">
Question (to all PCB engineers): how often do you rely on the clearance val=
ue set in a footprint?<br></blockquote><div><br></div><div>My clearances ar=
e typically defined at the board level by my netlist and my geometry. I can=
&#39;t think of a time I&#39;ve ever defined a clearance in a footprint tha=
t wasn&#39;t highly specialized. <br><br></div><div>--Chad<br></div></div><=
/div></div>

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