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Date: Sun, 13 Aug 2017 16:16:21 +0200 (CEST)
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Subject: Re: [geda-user] pcb slotted holes for relay
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On Sun, 13 Aug 2017, Carlos Nieves wrote:

>Hi,
>I think both options can be needed. The usual way would be option B.
>
>Option A can be used for other complex things...
>
>I remember seeing some special PCB supplier supports components inside a
>cavity. I mean being able to place a smd component to be soldered at layer
>3, for example, in a PCB with more than 4 layers. There is a hole or cavity
>in layers 1 and 2 to allow this.

Nice!

A similar random special case:

As a hobbyst, when I do 2 layer and vias, I have to solder in a piece of 
wire (I don't want to keep chemicals for plating). I once considered 
drilling a large enough hole and put a 0603 in there and solder at both 
ends, sort of combining a via and a resistor. Then I realized pcb-rnd 
didn't support that at all. I think it'll be possible with pad stacks and 
subcircuits.

>
>Of course this is not usual... But please design the core properly so
>everything could be done at some point in the future...

Thanks, that's my intention!

Regards,

Igor2