I thought at first to cut my layout in half so it is less “vertically” but then I thought maybe it is not a good idea since they will probably put 5 of these side by side
also, should I set a margin for the edge cut ? I’ll have to do a lot of post cut so I tried setting the edge close to the final result
ground plane : one per sub-board ? I wanted to use v-cuts but apparently they need to be 70mm at least so…
if I add v-cuts is it going to be considered as multiple boards ? and so more expensive ?
For standard thickness (1.6mm) a panel size has to be anything between 70x70mm and 300x300mm.
You don’t need to add rails, so then you can have your boards from one edge to the other.
Otherwise add a rail (I believe a minimum rail width is 5 or 8 mm).
If you order a standard economy service you pay the same (pretty sure). If you choose some fancy options like black soldermask, then it’s standard service which requires minimum 70x70mm board size. I don’t know exact PCB size of your project, but I think then you have to panelize them. If you don’t know how to do it then choose an option for JLC to panelize it for you.
Upload your gerber files to their website, try various options and see the prices.
PS. If you want to play around with panelizeing - try KiKit. Very powerful panelize tool for KiCAD.