Hello! I think the default settings are set to what JLCPCB can manufacture, so you should have success with default settings. But a user may also want to only use EasyEDA for schematic and PCB layout but order the PCB's from another place, so then the user has to set the rules for a different company's capabilities. But do consider setting up some rules. I've seen autorouted boards with thin power traces asking to be fuses. I would obligate you to disable the routing of the GND net and make copper areas on both top and bottom layers which will connect all the GND's together. Also, by the time you set up the autorouter for its settings, you could have already routed the board yourself :D And don't be afraid to ask for reviews of your board on the forums, whatever it is, really. If you're unsure about something, it's better to have somebody look at it and help you before you order it and have a disappointment in your post. It's good to learn from mistakes, but we have enough waste on our planet, so let's not make somebody abroad make garbage for a living :)

Hello ; @deskpro256 The default rules settings are not set to JLCPCB capabilities (minimum) but set to a settings supported by JLCPCB. @[Saad201147](https://easyeda.com/Saad201147)  Auto router support the JLCPCB capabilities and support more settings that could not be produced by JLCPCB. Example: you can trace a track with a width of 0.051mm which is not supported by JLCPCB which request a minimum trace width of 0.127mm for a 2 layers 1oz > Note : please to check all the "Auto Router Config" before starting your auto router and make your settings relatively to JLCPCB capabilities which you can get from the following link : [https://jlcpcb.com/capabilities/Capabilities](https://jlcpcb.com/capabilities/Capabilities)

@JLCPCBsupport Okay, thank you very much. In auto routing I used 0.3mm trace width.

@deskpro256 Thank you so much for this info! However, I didn't understand one thing, my PCB design is completely through hole, so do I still net Ground Plane [copper area] on both top layer and bottom layer or just bottom layer alone would be enough? I don't want to use it on top layer purely because of how it looks lol.

@deskpro256 I meant, "do I still need* ground plane [copper area] on both top & bottom layers"

@deskpro256 NVM, it actually looks good - matte black! However, does it still matter if I only use bottom side for Ground Plane [copper area]?

@Saad201147 I'd say that it depends on your PCB, but generally it is ok if the PCB is quite simple