As you can see, the engraving process is quite simple. There are many different ways to do it. You can either use a laser or a CNC machine
A laser is a tool that burns holes into plastic using a beam of light. The beam is focused onto the surface of the plastic and then it burns through it like a laser beam would burn through glass. The beam will go through multiple layers of plastic before it burns out, which means that you need to make sure that your material is thick enough so that there won't be any holes left behind once your design has been burned through
The other option would be CNC machines, which are computer controlled machines that move back and forth along two parallel rails while cutting out various shapes and designs on your material piece by piece. This type of machine requires much less effort on your part because all you have to do is decide what shape or design you want engraved on your plastic part, tell the machine where exactly you want them cut out from, and let it do its job!
cnc engraver for plastic