Brian Guralnick wrote: > What type of driller? > > Are you talking about just drilling the pads & holes? > Or, are you talking about a board milling machine? > > Usually, board milling machines will take the Gerber & process it specifically for > the milling machine. As for a hole drilling machine, the 1 of the generated drill > files might already be in a suitable format for the machine. Remember, Protel > generates (if I remember correctly) a .drl, a .drr & a .txt which all contain the > drill data. The .txt file should be somewhere close to HPGL & Gerber. It's > basically a set of x&y coordinates.
No, the .drr is a drill report, it only tells how many holes of what sizes are used. .drl is an EIA format RS-274D file for the drilling machine. EIA is a paper-tape format that predates ASCII. The .txt file is ASCII RS-274D, commonly called an Excellon drill file. It is nothing like HPGL at all, which is an HP pen plotter format. It is related to a Gerber file, but has major differences (ie. it uses suppressed leading zeroes instead of trailing zeroes). Yes, it is mostly X and Y coords, that is true. Jon * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
