I got some old PCB's that i still have in stock but do not have a stencil for them.
The original gerber file was for 1 PCB but the PCB company generated a panel with multiple PCB and also sent me the updated panel gerber files.
Is it possible to edit the panel gerber files using any tool to
1. Reduce the aperture size of the panels
2. Reduce aperture size on GND pads on the QFN components.
We aim to use a company called pcbway to make the cheap stencils, but they do not provide an editing service.