Archive of the former Yahoo!Groups mailing list: 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...