Homebrew PCBs

This is what you need:
http://www.p-m-services.co.uk/rs274xc.pdf
mike

--- In Homebrew_PCBs@yahoogroups.com, "Bob Weiss" <BWeiss@p...> wrote:
> 
> I know there is another Yahoo group for this but I can't get my 
> messages to post there for some reason and was hoping someone here 
> has experience with this...
> 
> I am currently working on building my own CNC machine and I've been 
> researching this board and the net for about a week and I've got 
> some basic questions and was hoping someone here can lend me a hand?
> 
> 1) I use Eagle to layout my PCB's and I outputed a job using the CAM 
> processor and choose Gerber as the output format. The file it 
> produced is formated like:
> 
> X007708Y008148D02*
> 
> The file is in inches and I was wondering how to do you read this? 
> Is it telling the machine to move the drill to X coordinate 007708 
> from the home (0) position? If so is .007708 inches away or 
> something else?
> 
> 2) The first line in the file is x=0 and y=0 in the format above, I 
> am assuming its telling the drill to move to home position first. 
> How do you determine where that point is on a board? Is it the top 
> left hand corner of the board looking down on it?
> 
> 3) Which axis is the X axis? I mean, is the one that moves left to 
> right when looking at the machine from the front?
> 
> Thanks for any help you can give...