Error when running a Job

I'm getting an unusual error message. When I tried running a CAM job the error message says the package contains a polygon that may cause extremely large plot data. What's causing this error and how do I fix it? This is going to be a prototyping board.

Thanks,

Mike

0 dukepro over 10 years ago

On 01/06/2015 07:09 AM, Michael Levin wrote:
I'm getting an unusual error message. When I tried running a CAM job the
error message says the package contains a polygon that may cause
extremely large plot data. What's causing this error and how do I fix
it? This is going to be a prototyping board.

Mike,

This is usually caused by a zero (or very thin) wire width in the
polygon. Eagle will fill the area using a "pen" of the specified
width. Thinner widths will be able to fit between object within the
fill area. This width also controls the wire width that connects to
pads and vias with the same name as the polygon. So, the thinner the
wire, the better the thermal isolation and the higher the resistance
between the via or pad and the fill. On the other hand, larger widths
will fill the area in fewer passes (smaller Gerber files), and will
provide a better connection to thermal relieved vias and pads, but will
not be able to fit in tight spaces which could leave portions of the
polygon unconnected.

Try adjusting the wire of the polygon with to something like 0.5mm or
10 mils. Remember to do a ratsnest after each change to make sure the
fill area is adequate and it doesn't leave any orphans (an area of fill
that is left disconnected from other areas of the same polygon).
Orphans are left connected by an air wire allowing the user to manually
route a connection to the orphaned area.

HTH,
- Chuck

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