Re: gEDA-user: [pcb] solder mask polarity

[Dave McGuire <mcguire@neurotica.com>]

On Saturday, July 19, 2003, at 05:58 PM, Dan McMahill wrote:
> > Ok, after a number of emails back and forth with the folks at Advanced
> > Circuits, I learned that the "industry standard" for solder masks is
> > to print them with positive polarity (i.e. dark where you want solder
> > to go) - you're specifying the reliefs, not the mask around them.
> > Apparently, some shops will accept either and just fix them as needed.
> For professional boards I've always sent the soldermask relief as a
> positive layer, ie, dark where solder goes as you said.  The boards 
> I've
> done with PCB were fabbed by a low cost place and I didn't get
> soldermask on those.
  Hey Dan, would you mind if I asked which board house you use, and 
could you (if you have a spare moment) give me a quick rundown on what 
you sent to them, and any other information they require?  I'll be 
doing a board with PCB very soon and I need to find a cheap board house 
to fab them.

            Thanks,
             -Dave

--
Dave McGuire                 "You don't have Vaseline in Canada?"
St. Petersburg, FL                     -Bill Bradford