Re: [N8VEM-S100:7260] Has anyone done a board with more than the standard 2-sides?

[Todd Goodman <t...@bonedaddy.net>]

PCBCart can do up to at least 10 layers (10 layers is the most in the
selection on the order entry.)

I'm pretty sure someone did a 4-layer board before.  Not S-100 maybe but
ECB or SBC.  Hopefully they'll speak up.

Todd

* Bob Bell <bbel...@gmail.com> [150619 07:13]:
> I am working on a board design (details to appear later - it's getting 
> close) and I am concerned about component density and the ability to route 
> the board.  A previous version of the board pretty much maxed out component 
> count and took several weeks (albeit rare spare time) to hand route (the 
> autorouter I was using at the time just utterly gave up.)  This new design, 
> even with all the random logic and some of the higher-level logic crammed 
> into *12 GALs*, exceeds the pin count, my measure of board density, of the 
> previous version by nearly 30%.  So, it is looking quite likely that I'll 
> need to go to at least a 4-layer board to be sure it can be routed with the 
> chips as close to each other as I believe they will need to be.
> Has anyone used KiCAD to do 4 layers?
> Does the Chinese company I have seen used for many of the recent boards do 
> 4 layers?
> What precautions, tips or best practices should I be aware of?
> Any input from this great group would be much appreciated!
> 
> Thanks!
> 
> Bob Bell
> 
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