On Sunday 09 September 2007, Jon Elson wrote:
>Gene Heskett wrote:
>> Thanks Jon. This was just recently generated on a Mac, a simple pcb board
>> for mounting a 27xxx eprom chip and plugging it into a color computer.
>>
>> Is there a convertor in the geda suite (or any linux & free) that can
>> convert this to our dialect of g-code, RS-274D?
>
>Well, no. The Gerber file is designed to draw the pattern on
>film with light, with the apertures setting the shape of the
>light beam. It can flash round, square, oval and thermal relief
>pattern in one blink, with one like of G code. You can't do
>that with a mill. If you want to actually cut a working PC
>board with a router bit, you need to "convert" the file quite
>radically with a trace isolation program. It figures out which
>traces and pads are connected, then draws a series of moves
>around the entire extent of the net. Eagle is one of the
>programs that can do this, but the somewhat odd format of this
>file may be an obstacle. Could the person who made the file on
>the Mac specify for trailing zero suppression on these files and
>re-generate it? I believe I could then read it on my Protel
>software, for instance, or make it plot on my photoplotter.
>
>The industry standard is for Gerber photoplot files to have
>Leading zeros suppressed, and for Excellon drill files to have
>Trailing zeros suppressed! All part of the history of the
>electronics industry, dating back to punched paper tape.
>
>Jon
I'll check with the author, it could be he isn't that fam with the usual ways
of doing things. Thanks Jon.
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
"Mach was the greatest intellectual fraud in the last ten years."
"What about X?"
"I said `intellectual'."
;login, 9/1990
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