1- Finish your design on any PCB design software and export Gerber files.
2- Use any tool you are familiar with to generate the engraving code.
3- Color your PCB with the any metallic marker and fix it well on the drawer.
4- With Projectas software, download the Code on Projecta. Our special spindle will engrave the design in minutes and when done you will be able to open the drawer and get your PCB.
5- Put the PCB in acid for etching.
We are done ^_^