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Subject: Re: [Homebrew_PCBs] double sided boards and through plating

From: "Henry Liu" <henryjliu@...>
Date: 2008-10-17

I figured it out in Eagle - needed to draw boxes over all the places
on the tRestrict layer (41) then it works great. My boards are so
much easier now!

Henry

On Thu, Oct 16, 2008 at 4:21 PM, Harvey White <madyn@...> wrote:
> On Thu, 16 Oct 2008 14:39:35 -0700, you wrote:
>
>>Most pcb programs assume holes are through plated which isn't the case
>>when I make my own double sided board. Do you guys usually solder
>>both the top and bottom of a pin that's through plated?
>
> No. Some items (IC sockets) cannot be treated that way. Some items
> are designed to be soldered on one side only (resistor networks).
>
> I use separate VIAS, and do not allow a wire to terminate at a
> component pad for any layer other than the bottom.
>>
>>If anyone is using Eagle, in the Single Sided demo, whenever I
>>autoroute it, it knows to generate wire bridges for the top layer.
>>
>>I use the same CTL file but whenever I generate my own board, it seems
>>to assume plated through holes.
>>
>>I checked the DRC and they seem to be the same.
>>
>>How do I get Eagle to treat the board like in Single Sided demo and
>>not plated through holes? Thanks.
>
> Other than copying the rules over, that's all I know.
>
> Harvey
>
>>Henry
>