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## Use Fab Design Rules in Eagle
This will help you make sure that traces are not too close together!
In this folder, find ``` fabcity-designrules.dru ```
In Eagle, in the Board Window, find ``` edit >> design rules ```
On the first tab, use 'load' and load this .dru file.
Now you can use the 'DRC' command to check!
## Automate the generation of trace.png and cutout.png files
Matt Keeter wrote a Python script that opens up Eagle and exports a number of pngs using ImageMagick.
To get this script to run, use the following steps:
* Save eagle_png.py into the folder where you keep your Eagle project folders containing .brd and .sch files
* Install [ImageMagick](https://www.imagemagick.org/script/index.php)
* Create a polygon over your .brd design on the Milling layer (number 46)
* Set the isolate value for the polygon to a number greater than 16, this will ensure there's enough black space for mods to generate toolpaths in (see image below)
* Run eagle_png using the following command `python eagle_png.py board_folder/board_name.brd`
* The script should have saved several .png files into the folder where the .brd file is
<img src="img/isolate.png" alt="Increase isolate value for polygon" width="700"/>
> **Note:** With later versions of Eagle (9.0.1+), by default it is configured to show text similar to "1-16" ontop of each via. This comes through even when exporting your final image. To remove this artifact, type the following in the commandline: `SET Option.ViaLength 0`