Hey,
I'm wondering, does JLCPCB support milling pockets / z-milling on regular prototyping PCBs?
I'm talking about pockets into the PCB, like a cutout, but not going all the way through the PCB.
e.g. on a 1.6mm PCB I want a 3x3mm square pocket milled 1mm deep into the top side.
If yes, how would I denote that? Design it like a cut-out, but add a note to document layer and order?
What would the limitations (e.g. router radius) be? Same as for cutouts? Only from one side?
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
