kicad-developers team mailing list archive

[Jean-Paul Louis <louijp@xxxxxxxxx>]

How do you route 3 layer boards? Top layer (components), 2 inner layers and no bottom layer is one configuration that come to mind? Those are not common, but they exist out there.

Jean-Paul


On Jun 6, 2014, at 2:40 PM, Lorenzo Marcantonio <l.marcantonio@xxxxxxxxxxxx> wrote:

> On Fri, Jun 06, 2014 at 08:31:33PM +0200, jp charras wrote:
>> A board has always 2 * n layers ( You know that).
>> And has at least always 2 sides, therefore 2 layers (like a rope has
>> always 2 ends).
> 
> Well, if there isn't copper (or jumpers) it's not a layer for me. And
> I pay less for the board. But obviously the board is not a moebius
> strip, so it has two sides :P
> 
>> THT boards (and not only THT boards) that could be done on only one
>> *routing* layer, but this layer could be the back layer or the front layer.
> 
> Another very important case is boards with THT on one side and SMD on
> the other. Countless power supplies are done that way.
> 
> Either way, it's not a problem. If I want to do a one layer board I just
> use one and hide the other.
> 
> -- 
> Lorenzo Marcantonio
> Logos Srl
> 
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