Re: gEDA-user: drill size editting in PCB

[Stephen Meier <smeier@AlchemyResearch.com>]

Perhaps,  We should specify hole sizes and tolerences. There are issues 
surounding size of hole size of pad around hole. If a board house can't 
make a via/pin hole to the specified tolerence then it becomes time to 
move to a different board-house. Also in any project. there are Non 
reacurring costs (NRE) associated with making a board. A list of which 
fab shops have made the board before would allow those costs not to be 
reduplicated. The board house would have to be told that they are free 
to re-use their art work for anyone ordering such a "Free hardware" fab.

Steve Meier


Karel Kulhavy wrote:

> On Mon, Dec 06, 2004 at 04:32:01PM +0100, Shahab Sanjari wrote:
>  
>
> > Dear list,
> >
> > is there a possibility to list all different drill diameters (pads / 
> > vias) and edit them after layout job is done, in order to reduce them to 
> > those standard values that the board-house likes? This reduces 
> > production cost naturally.
> >    
>
> However what about portability?
>
> What if I am making a free technology design that is intended to be
> manufactured by board houses all around the world? The only option I see here
> is to leave the hole as they are and tell the board house to either round to
> nearest or to round to bigger. Any suggestion how to do it better?
>
> Cl<
>
>