Clint & Dave,

I use the standard excellon header for all my boards and reference the tool 
sizes against qty and PTH / NPTH on the paper drawing for the parts. All my 
suppliers seem content with that.

Dave Coaker
Circuit Design Engineer
EEV Ltd - GEC Electro Optics

>Clint,

>Why not just provide the standard Excellon tool header?  Most, if not all,
>CAM systems can read the header directly so that the drill sizes are
>automatically assigned.  Your example may require the CAM operator to hand
>enter the sizes for each T-code.

>Dave Roesler
>TRI-C Design, Inc.

 ----------
> From: Clint Cote <[log in to unmask]>
> To: [log in to unmask]
> Subject: [DC] Drill Header
> Date: Friday, April 03, 1998 3:20 PM
>
> Hey,
>
> I used to program drill machines but that was a long time ago.  I am
trying to
> format my drill files to "satisfy everyone" here that needs info about
the
> drill.  I'm wondering if the format that I've included below will cause
any
> problems for the CAM guys that really need it.  If my memory serves me,
the M48
> means that what follows is the header up to the first % sign.
>
> M48
> TOOL    SIZE              QTY           PLATING
> ================================================
> T1      size: 0.009000    qty:2630      yes
> T2      size: 0.019000    qty:72        yes
> T3      size: 0.028000    qty:18        yes
> T4      size: 0.031000    qty:120       yes
> T5      size: 0.038000    qty:56        yes
> T6      size: 0.044000    qty:756       yes
> T7      size: 0.052000    qty:24        no
> T8      size: 0.082000    qty:24        no
> T9      size: 0.094000    qty:4         no
> T10      size: 0.125000    qty:8        no
> %
> G90
> M72
> T1
> X02265Y0193
> X02385Y02049
> X02439Y02041
> Y01958
>
> This isn't the traditional format, will it work or will it have to be
stripped
> out prior to processing?
>
> =============================================================
> Clint Cote                      GE Fanuc Automation
> PCB Designer                    PO Box 8106, Mail stop D-40
> Phone:  (804) 978-5946          Charlottesville, VA 22906
> e-mail: [log in to unmask]
>
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