I'm designing a board with an edge connector for 805 series female sockets.
Normally these have a bevelled / chamfered edge to allow for easier insertion.
I have seen a few other threads talking about this for PCIE cards, suggesting using v-cuts to produce a snap off edge that leaves a similar result.
I know JLCPCB can do this for panelised boards, but is it possible to add a v-cut to an 'un-panelised" board?
You can add a V-Cut line just by drawing a straight line in the Board Outline layer.
The angle of the edges however is very steep so they are far from the shallower angles needed for smooth connector entry. If you reference the edge angles to a straight cut edge of 90 degrees then the V-Cut edge angles are something like 80 degrees.
You can add edge finger contacts and state that you want them in the PCB order. JLCPCB can then create platwd edge fingers for such connectors but I do not know what they do about the edge angles. I cannot find that specified anywhere on the JLCPCB Capabilities page.