Spehro, Do you want a slot or a figure eight shape?
I always use one of either two methods for such things.
1) I use a unique hole size for one pad, 1 - 5mils, something they cannot attempt to drill. Then do a note referencing that drill size and a small drawing outlining the shape and dimensions based upon the unique hole size being the center of one of your lobes.
2) If it is a slot, then I usually use a mechanical layer to draw the shape I want in the correct location and orientation. Then reference it in your notes telling the fabricator that this shape is desired and that it is plated. Make sure there is some common reference between layers so that a Gerber set aligns the detail precisely where you want it and in the correct orientation on the PCB. I have also give these details on multiple layers with the lines actually including an offset for appropriate router bit diameters that I know the fabricator has. Theses layers are then just a router centerline path for them to program into their machine.
--
Sincerely,
Brad Velander
"Spehro Pefhany" wrote in
message news:pdaq61hknm8ilg9tneud2i8hkkgjluckce@4ax.com...
> Is this generally acceptable? I want to overlap two of 0.136"
holes by
> about 0.024" in several places. They are plated with no
electrical
> function.
>
> Thanks!
>
> Best regards,
> Spehro Pefhany
> --
> "it\'s the network..." "The Journey is
the reward"
> speff@interlog.com Info for manufacturers:
http://www.trexon.com
> Embedded software/hardware/analog Info for designers:
http://www.speff.com