At 10:36 AM 5/20/2002 -0700, Brooks,Bill wrote:
>Okay, I'll jump in... The PCB fab house can do what ever it wants to make
>the board.YOUR FAB DRAWING allows your company to ACCEPT/REJECT it if it
>does not meet your standards.
Yes. Another reason not to specify as-drilled sizes. It is a lot
nal Message-
From: Bob Wolfe [mailto:[EMAIL PROTECTED]]
Sent: Saturday, May 18, 2002 9:02 AM
To: Protel EDA Forum
Subject: Re: [PEDA] Too many hole sizes
Brad,
Just a thought,
I believe IPC docs do specify a formal Fab Dwg for complete documentation,
however whether
or not the IPC spec's def
ert M. Wolfe, C.I.D.
[EMAIL PROTECTED]
- Original Message -
From: "Brad Velander" <[EMAIL PROTECTED]>
To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
Sent: Friday, May 17, 2002 12:08 PM
Subject: Re: [PEDA] Too many hole sizes
> Are there any IPC Ce
put
notes on some of those layers. I guess I like to make sure they don't miss a
thing. :)
Regards,
Ted
-Original Message-
From: Brad Velander [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 17, 2002 3:26 PM
To: 'Protel EDA Forum'
Subject: Re: [PEDA] Too many hole
without debating the merits or demerits of this approach
(specifying drill size rather than finished size)
i must say that the industry standard is to specify finished size
one proto shop (AP) is the only exception to this i have seen over many
years of many shops
also examining the title bloc
Forum'
> Subject: Re: [PEDA] Too many hole sizes
>
>
> Brad, don't forget there are many different Protel users (and
> uses) on this
> list ... many doing prototypes, or working in (very) small
> companies. The
> proto houses I've used don't want
Brad, don't forget there are many different Protel users (and uses) on this
list ... many doing prototypes, or working in (very) small companies. The
proto houses I've used don't want PDFs or (heaven forbid!) paper printouts,
just the Gerbers. So if they want to "see" the drill drawing, they bet
Georg Beckmann wrote:
> I do not understand, what a drill drawing is good for. I only use the drill
> file and the
> board shop read this to the drill machine.
> Since I have a computer and CAD program, I'm happy
> not to fill out a drill drawing sheet with any hole marked with a secret
> label a
: Protel EDA Forum
> Subject: Re: [PEDA] Too many hole sizes
>
>
> In a message dated 5/17/2002 1:43:29 PM Eastern Daylight Time,
> [EMAIL PROTECTED] writes:
>
> I used to do this too, but I've found that there's a very
> good reason to make
> the pla
At 08:16 AM 5/17/2002 -0700, [EMAIL PROTECTED] wrote:
>4. It is good practice to provide fabricators with your whole design or at
>least the .pcb file because often slight corrections are necessary to be
>made just to adapt the pcb to their technologies, and let them generate
>files and reports
[EMAIL PROTECTED] wrote:
> 1. Drill bit manufacturers normally make tools with diameters
> in the range 0.3 - 6.5mm (0.012 - 0.256") in step of 0.05mm (0.02").
I believe that should be 0.05mm (0.002")
If all I could get was 20mil increments I would be in a real predicament!
David W. Gul
Visit us at Booth 2G2-09 at CommunicAsia 2002 in Singapore June 18-21.
> -Original Message-
> From: Georg Beckmann [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 16, 2002 10:17 PM
> To: 'Protel EDA Forum'
> Subject: Re: [PEDA] Too many hole sizes
>
>
> I do no
On Thu, 16 May 2002, "David W. Gulley" wrote:
>
> I just spent a morning trying to resolve why my Drill Drawing Gerber
> plot was showing a whole bunch of holes as size 0 mil (99SE-SP6).
>
> It seems that since there are only 16 symbols defined for the drill
> drawing, once you have more than
Hi Georg,
Our PCB manufacturers insist on having the drill
drawing.
The drill file helps them to drill the PCB.
The drill drawing shows the positions of the holes
(different symbols for different holes) and their
count. Some useful information about plated and
non-plated holes could be placed ther
n the board shop makes one or more mistakes when programming the '
punchhole - tape for
the drill machine '.
Georg
-Urspr ngliche Nachricht-
Von: Brad Velander [mailto:[EMAIL PROTECTED]]
Gesendet: Donnerstag, 16. Mai 2002 22:37
An: 'Protel EDA Forum'
Betreff: Re: [PEDA] Too
At 01:37 PM 5/16/2002 -0700, Brad Velander wrote:
>Abd ul-Rahman,
> I agree with your general idea but suggest it is not practical with
>a most designs.
Depends on how one tries to use it, doesn't it?
> The text size would have to be so small as to make it
>unreadable on anything but an
.
> -Original Message-
> From: Abd ulRahman Lomax [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 16, 2002 12:54 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Too many hole sizes
>
>
> At 11:31 AM 5/16/2002 -0700, Brad Velander wrote:
>
> >
At 11:31 AM 5/16/2002 -0700, Brad Velander wrote:
> The KB 1472 is so nice, they don't even suggest that letter
>characters might solve the problem so you are left to wonder. Is there a
>limit of 16 sizes even with the letter symbols?
Actually, in my opinion, the best practice is to use
Brad Velander wrote:
> David,
> thanks for the warning to everyone. Does assigning letter characters
> to your drill drawing assignments solve the problem? There should be a limit
> of 26 at least then. Have you tried this?
> The KB 1472 is so nice, they don't even suggest that letter
us at Booth 2G2-09 at CommunicAsia 2002 in Singapore June 18-21.
> -Original Message-
> From: David W. Gulley [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, May 16, 2002 11:06 AM
> To: Protel EDA Forum
> Subject: [PEDA] Too many hole sizes
>
>
> I just spent a mor
I just spent a morning trying to resolve why my Drill Drawing Gerber
plot was showing a whole bunch of holes as size 0 mil (99SE-SP6).
It seems that since there are only 16 symbols defined for the drill
drawing, once you have more than 16 different drill sizes the CAM Drill
drawing lumps drill
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