Plated and non-plated hole of the same diameter need
different drill tools. That is because the plating
process applies copper to the inner wall of the hole,
so you need a 

> -----Original Message-----
> From: Thomas [mailto:[EMAIL PROTECTED]]
> Sent: Friday, September 20, 2002 7:39 AM
> To: 'Protel EDA Forum'
> Subject: Re: [PEDA] Unplated pads
> 
> 
> 
> 
> > -----Original Message-----
> > From: Rick Wilson (Protta) [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, 20 September 2002 15:06
> > To: 'Protel EDA Forum'
> > Subject: Re: [PEDA] Unplated pads
> > 
> > 
> > Thomas,
> > 
> > Make your bottom layer pads have "NO DRILL" - 0  size - 
> 
> What??? I'm not sure you understand what I'm on about. How am 
> I supposed to
> push the component legs through the PCB without holes?
> 
> >I'm sure you don't want to have a bottom layer only pad, 
> with a drill?
> 
> Yes that's what I want. pads and tracks on one side only and 
> unplated holes
> through the pcb.
> 
> > It  won't work anyway in the manufacturing process.
> 
> I don't see why not? I've seen hundreds of single sided pcbs 
> like this.
> 
> > 
> > The other thing I would suggest is to find out why the 
> board house is
> > asking for this. Do you supply them with an Excelon Drill 
> > file? The .DRL
> > file produced by Protel? If so, they don't need to worry about a pad
> > master.
> > 
> 
> Actually we supply the .pcb file (allot of ppl in Australia do).
> 
> > Last bit of advice. Find another board house.
> 
> No. We have a very long standing relationship with this one particular
> company.
> Please keep your advice Protel related.
> 
> > 
> > Rick Wilson
> > 
> > 
> > 
> > -----Original Message-----
> > From: Thomas [mailto:[EMAIL PROTECTED]] 
> > Sent: Thursday, September 19, 2002 7:05 PM
> > To: 'Protel EDA Forum'
> > Subject: Re: [PEDA] Unplated pads
> > 
> > 
> > The pads are through hole single side only (not SMT).
> > 
> > This particular board I'm working on is single sided however 
> > it started
> > out as double sided. As things progressed I realised it would 
> > all route
> > on a single layer. 
> > 
> > I can't change the layer stack manager to a single sided 
> > board (it seems
> > to think the top layer is being used - but it's not).
> > 
> > So I changed all the multilayer pads to bottom layer, hence 
> > they had to
> > have their plated attribute turned off.
> > 
> > 
> > 
> > > -----Original Message-----
> > > From: John Haddy [mailto:[EMAIL PROTECTED]]
> > > Sent: Friday, 20 September 2002 11:03
> > > To: Protel EDA Forum
> > > Subject: Re: [PEDA] Unplated pads
> > > 
> > > 
> > > Are you referring to genuine single sided pads (e.g. surface
> > > mount pads),
> > > or pads with holes that only exist on one side of the board?
> > > 
> > > If the former, then I can't imagine why the board shop 
> > would make the 
> > > request it did, since the pad master would be generated 
> > correctly for 
> > > the layer required. If the latter, this technology would 
> > only be used 
> > > for non-plated-through-hole boards, so the existence of imaging
> > > features on
> > > the pad master plot would be irrelevant.
> > > 
> > > Personally, I'd go back to the board shop and ask them
> > > specifically why
> > > they've made the request. I HATE having to do workarounds 
> > > that have the
> > > potential to support future screw-ups, which is what would 
> > happen once
> > > you get into the habit of ignoring all warnings (or turning 
> > > them off if
> > > that's possible).
> > > 
> > > John Haddy
> > > 
> > > 
> > > > -----Original Message-----
> > > > From: Thomas [mailto:[EMAIL PROTECTED]]
> > > > Sent: Friday, 20 September 2002 10:34 AM
> > > > To: Protel Data Forum (E-mail)
> > > > Subject: [PEDA] Unplated pads
> > > >
> > > >
> > > > Our board house has asked us to de-check the "Plated" box
> > > for single sided
> > > > pads.
> > > > Ok, 1 global edit later and it's done, only one problem 
> > the DRC now 
> > > > comes up
> > > > with:
> > > >
> > > > Processing Rule : Broken-Net Constraint ( (On the board ) )
> > > >    Violation         Net A
> > > >      Warning - net contains unplated pads
> > > >    Violation         Net N/E
> > > >      Warning - net contains unplated pads
> > > >    Violation         Net A1
> > > >      Warning - net contains unplated pads
> > > > etc...
> > > >
> > > > I realise these are warnings rather than full blown 
> > violations but 
> > > > is there any way
> > > > to turn this warning reporting off in the DRC report?
> > > >
> > > > Thanks,
> > > >
> > > > Tom.
> > > >
> > > 
> > 
> 

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