an open source PCB editor for Microsoft Windows, released under the GNU General Public License.

Swell pad for solder mask

Usually a solder mask for the pads is chosen a little more than the pads themselves by a certain amount. This value is set in the CAM dialog box (called swell pad for solder mask), and is applied to all pads that have DEFAULT for the solder mask in their properties. To call the CAM-window press CTRL + G

  To open the pad properties you need to do the following:

1) Select the part of interest on the board (left click) 2) Press F2-Edit Footprint 3) Then select the pad in the footprint editor 4) Press F1-Edit Pad, a dialog box will open

Dialog Edit Pin