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CAM output question

e14 Contributor

I've got a problem when I view my board in GC prevue - usually use this as a

final check.

Just did a simple single sided board with two holes on it (no vias).

Outputted the job as I normally do then import the 274x gerbers and excellon

drill file into GC Prevue. Everything looks OK except my two drill holes

that are way outside the board area.

 

Everything looked good in Eagle 5.11.

When running the CAM job, I no warnings.

 

Don't know if it is significant, but this board was imported as a DXF using

DXF to Eagle Script converter (part of Eagle power tools 5). Initially I had

no drills at all in the output and realized that a Circle in the Holes layer

does not create a drill. I exchanged this for a Hole and I got my correct

hole legend on the eagle drawing.

 

In GC Prevue, I import just the drd (drill data file) and got the two holes

(diameter was right but locations were way off).

 

Any ideas what might be causing this?

Bob Oppenheimer

 

 

  • Never mind, I just figured out that it was a configuration problem in GC

    Prevue.

     

    I opened the excellon drill output in a text editor

    %

    M48

    M72

    T01C0.1661

    %

    T01

    X10036Y1969

    X17123Y1969

    M30

     

    The two holes should have been at 25.50, 5.00mm and 43.50, 5.00mm.

    GC Prevue was thinking that it was two sig figs and three fractional places.

    I changed it to 1.4 and suddenly it made more sense. Odd thing is that in

    the past, I did not have to change anything and import from gerber files to

    gc prevue went without intervention.

    So for the drill file, I'll now have to manually select in gc prevue:

    NC Drill Filetype, 1.4/abs/inches/leading Supp/Quad

     

    "Oppie" <oppie@saynotospam.com> wrote in message

    news:jpiv4o$gq$1@cheetah.cadsoft.de...

    I've got a problem when I view my board in GC prevue - usually use this as

    a final check.

    Just did a simple single sided board with two holes on it (no vias).

    Outputted the job as I normally do then import the 274x gerbers and

    excellon drill file into GC Prevue. Everything looks OK except my two

    drill holes that are way outside the board area.

     

    Everything looked good in Eagle 5.11.

    When running the CAM job, no warnings.

     

    Don't know if it is significant, but this board was imported as a DXF

    using DXF to Eagle Script converter (part of Eagle power tools 5).

    Initially I had no drills at all in the output and realized that a Circle

    in the Holes layer does not create a drill. I exchanged this for a Hole

    and I got my correct hole legend on the eagle drawing.

     

    In GC Prevue, I import just the drd (drill data file) and got the two

    holes (diameter was right but locations were way off).

     

    Any ideas what might be causing this?

    Bob Oppenheimer