How to make drill holes in Eagle#

environment#

preparation#

Download a User Laguage Programs(ULP), called drill-aid.ulp and save it to a folder, Document > Eagle > ulps.

make holes!!#

As an example, let us try to drill holes of this board design.

Select File > Run ULP...

Then, choose drill-aid.ulp and click OK

Change drill center diamter mm to 0 (0.3 as default) and click OK

Go View > Layer settings..., then show only Layer 116, centerDrill.

Holes are not fill, type in command line set fill_layer 116 1

The command will change the fill pattern line to fill.

You can export images for mods as usual.

also can export a trace image with pads without holes.

At mods, use inverted image to mill.