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From: v064mb9k@ubvms.cc.buffalo.edu (NEIL B. GANDLER)
Subject: Re: Double Sided Boards
Message-ID: <D3r4nI.E12@acsu.buffalo.edu>
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Date: Thu, 9 Feb 1995 21:24:00 GMT
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Xref: glinda.oz.cs.cmu.edu comp.robotics:17798 sci.electronics:118886

In article <3h9ks3$8fr@hemp.imel.kyoto-u.ac.jp>, onat@turbine.kuee.kyoto-u.ac.jp (Onat Ahmet) writes...
>In article <3h67lh$goa@usenet.INS.CWRU.Edu>
>cgc3@po.cwru.edu writes:
> 
>>> Hi,
>>>    I'm working on a project and am thinking about
>>> constructing an etched double sided board, but I can't think of
>>> how traces from one side would be electrically connected to traces
>>> on the other side.  My router connects top side traces to bottom side
>>> traces through IC pin holes, but it would be impossible to solder the
>>> pins to both sides of the board.  So how is this normally done?
> 
>This may be too specific, but in OrCAD PCB (costs a fortune yes),
>you can choose areas on the board and inhibit the placement of
>some parts in those. The main areas of pain are the IC sockets
>(and the like, where you cannot reach under). I never actually 
>did this, but you could prohibit the placement of vias to the
>IC pins by using this option. I know that autorouting is 
>painful as it is, but this is life...
> 
>Ahmet ONAT

	I actually find routing pc boards kind of fun. Its kind of analogous
to playing a game of sim city in a remote way. Its no more tedious than 
using a paint program.

		Neil Gandler

