Re: [PEDA] irregular shaped holes ??

2001-07-19 Thread Peter Bennett

Robison Michael R CNIN wrote:
 
 thanks for the suggestion about putting some text inside the cutout
 area.  one thing i tend to forget is that people do actually look at the
 gerbers.  i get in this mode where i think all they do is blindly submit
 them to a machine and a pcb comes out the other end.  i'll make a
 readme file too.
 
 miker

Miker - here is a sample of the readme file I send out with a PCB order:

From: Peter Bennett
  TRIUMF
  4004 Wesbrook Mall
  Vancouver, B.C. V6T 2A3
  Phone: 222-7456
  FAX: 222-7307
  email: [EMAIL PROTECTED]

TRIUMF P.O. # TR 137029

Job:0946 Scanning ADC
PC Board  P-13151

The following files are required for this job:
   p13151.GTL   Component side copper photoplot file
   p13151.GBL   Solder side copper photoplot file
   p13151.GTO   Component layout silkscreen
   p13151.GBS   Bottom Solder Mask
   p13151.GTS   Top Solder Mask
   p13151.TXT   Drill file
   readme.txtThis file


Note: the Gerber files include embedded aperture data.

Drill Information

Tool Hole Size  Hole Count Plated   Tool Travel
---
T125mil (0.635mm)  159  75.20 Inch (1909.99
mm)
T235mil (0.889mm)  647  124.45 Inch (3161.07
mm)
T347mil (1.1938mm) 74   24.86 Inch (631.56
mm)
T455mil (1.397mm)  15   16.77 Inch (426.00
mm)
T570mil (1.778mm)  23.59 Inch (91.19 mm)
T6125mil (3.175mm) 10   27.48 Inch (697.97
mm)
T7141mil (3.5814mm)311.16 Inch (283.47
mm)
---
Totals 910  283.51 Inch (7201.24
mm)

   
The board is 7.20 x 11.6, +/- .010, double-side,  
.0625 nominal thickness, FR-4 material
1 oz or greater copper
Standard through-hole plating, standard tin-lead plating on exposed
copper.
Standard gold plating on edge connector

Solder mask both sides  (different masks)
Component Ident silkscreen on component side (ident not required on
bottom)


Trim boards to outline on component side artwork

Please make at least 3 boards.


-- 
Peter Bennett
TRIUMF
4004 Wesbrook Mall, Vancouver, BC, Canada  
GPS and NMEA info and programs: 
http://vancouver-webpages.com/peter/index.html

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[PEDA] irregular shaped holes ??

2001-07-18 Thread Robison Michael R CNIN

hello,

i've never had to place an irregular shaped hole in a board before,
and i can't figure out how to do it.  i looked up drill, hole, and
irregular in the help and had no luck.

its essentially an elongated circle.  i kinda figure that it involves
perhaps placing some lines and arcs on a specific mechanical
layer, but thats as far as i can get.  all the holes i have placed so
far have been done with the pad tool.  i notice that you can adjust
the shape of the solder ring using this tool, but not the hole shape
itself.  

thank you, miker

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Re: [PEDA] irregular shaped holes ??

2001-07-18 Thread Peter Bennett

Robison Michael R CNIN wrote:
 
 thanks peter,
 
 recently we acquired some gerbers for a board that had a hole in it
 that was used as a handle.  i tweeked some of the silkscreening
 and sent it off to advanced circuits and they produced the board with
 no problem.  i did call them and ask if they could do irregular holes
 (not pads) first.
 
 so there is evidently some sort of standard for denoting these sort
 of holes.  unfortunately, its difficult for me to reverse engineer the
 former card's gerbers to see what sort of actions i need to take in
 protel to produce it.
 
 hmm... i've got an idea now.  i went to tools/preferences/display/
 and selected single layer mode and went thru the various layers
 and the mechanical4 is the only layer which displayed the army-
 green board outline.  i'm gonna venture a (dangerous) guess that if
 i put the hole outline on this layer that it would be noted as a hole.
 
 any general consent on that?

If you include Mech4 on the gerbers for the copper layers that should
work.  For large cutouts like that, I would also place text in the area
to be removed saying Cutout 1 x 4  to indicate the area to be
removed, and its approximate size, as well as mentioning the cutout in
the readme file.

-- 
Peter Bennett
TRIUMF
4004 Wesbrook Mall, Vancouver, BC, Canada  
GPS and NMEA info and programs: 
http://vancouver-webpages.com/peter/index.html

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Re: [PEDA] irregular shaped holes ??

2001-07-18 Thread Ian Wilson

On 04:39 PM 18/07/2001 -0500, Robison Michael R CNIN said:
thanks peter,
..snip..

hmm... i've got an idea now.  i went to tools/preferences/display/
and selected single layer mode and went thru the various layers
and the mechanical4 is the only layer which displayed the army-
green board outline.  i'm gonna venture a (dangerous) guess that if
i put the hole outline on this layer that it would be noted as a hole.

any general consent on that?

thanks again, miker

If you label it as a slot and add appropriate info in the manufacturing 
notes then this should work fine.  It is basically what I do.  I would 
typically dimension and add start and end coords of the slot (on a 
different mech layer).  The PCB maker has to interpret what the details on 
the Mech layers mean.  If you add appropriate strings and coords and 
dimension you can easily make it clear what is required.

Basically there is no method, in Protel at least, to convey any sort of 
slot.  You basically use the non-electrical (usually mech or drill drw 
layers) to specify the slot and then add info in manufacturing details.  If 
it is complex you then ring the PCB maker to make sure the understand 
exactly.  I have done one board with a mix of complex outline routes, large 
routed holes, routed slots and a few controlled depth routs (not right 
through the PCB).  I used a series of hatch patterns to discriminate full 
depth routs from the controlled-z routs and labelled it all on a different 
mech layer.  Board came through without fault.  I have never had a slot 
routing error.

BTW - Mike, either you are not doing many PCBs or you are much more 
comfortable with Protel and PCB manufacture in general.  I recall you 
thinking not so long ago, when you started in this game, that it was all a 
bit of a nightmare.  Congratulations.

Ian Wilson

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Re: [PEDA] irregular shaped holes ??

2001-07-18 Thread Robison Michael R CNIN

ian said:
 BTW - Mike, either you are not doing many PCBs or you are much more 
 comfortable with Protel and PCB manufacture in general.  I recall you 
 thinking not so long ago, when you started in this game, that it was all a
 
 bit of a nightmare.  Congratulations.
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 
thanks ian.  i'm not a full-time protel person.  writing digital
test programs
is my main job.  i needed 3 boards for a interface between the board
we
were testing and the test bench and we had lost the person we had
who
did board work, so we ended up buying protel.

learning protel turned me into a pcb magnet... anybody that needed
one
came to me.  we even picked up a significant legacy job where all
the 
spares were shot and they needed new ones built, but all they had
were
drawings, and no actual gerbers.  i've been doing about one board
every
three weeks.  

i enjoy using the protel software and i think its a good package,
even if
it is a bit unstable.  one thing i've found out is that there is
always 
something new to learn.  another thing i've learned is that the
answer is
usually here on the email group, and not in the protel
documentation.
grin

miker 



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Re: [PEDA] irregular shaped holes ??

2001-07-18 Thread Robison Michael R CNIN

thanks for the suggestion about putting some text inside the cutout
area.  one thing i tend to forget is that people do actually look at the
gerbers.  i get in this mode where i think all they do is blindly submit 
them to a machine and a pcb comes out the other end.  i'll make a
readme file too.

miker

 -Original Message-
 From: Peter Bennett [SMTP:[EMAIL PROTECTED]]
 Sent: Wednesday, July 18, 2001 5:11 PM
 To:   Protel EDA Forum
 Subject:  Re: [PEDA] irregular shaped holes ??
 
 Robison Michael R CNIN wrote:
  
  thanks peter,
  
  recently we acquired some gerbers for a board that had a hole in it
  that was used as a handle.  i tweeked some of the silkscreening
  and sent it off to advanced circuits and they produced the board with
  no problem.  i did call them and ask if they could do irregular holes
  (not pads) first.
  
  so there is evidently some sort of standard for denoting these sort
  of holes.  unfortunately, its difficult for me to reverse engineer the
  former card's gerbers to see what sort of actions i need to take in
  protel to produce it.
  
  hmm... i've got an idea now.  i went to tools/preferences/display/
  and selected single layer mode and went thru the various layers
  and the mechanical4 is the only layer which displayed the army-
  green board outline.  i'm gonna venture a (dangerous) guess that if
  i put the hole outline on this layer that it would be noted as a hole.
  
  any general consent on that?
 
 If you include Mech4 on the gerbers for the copper layers that should
 work.  For large cutouts like that, I would also place text in the area
 to be removed saying Cutout 1 x 4  to indicate the area to be
 removed, and its approximate size, as well as mentioning the cutout in
 the readme file.
 
 -- 
 Peter Bennett
 TRIUMF
 4004 Wesbrook Mall, Vancouver, BC, Canada  
 GPS and NMEA info and programs: 
 http://vancouver-webpages.com/peter/index.html

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