It is not possible to directly create a circular board outline in EasyEDA but all you have to do is: 1. Set the active layer to `Document`; 2. Select `Circle` tool from `PCB Tools`; 3. Draw a circle in the `Document` layer then set the X,Y centre and radius as required; 4. Set active layer to `Board Outline`; 5. Select `Track` tool from `PCB Tools`; 6. Carefully draw a peicewise approximation to a circle using the circle on the `Document` layer as guide; 7. Drag green dots to add more segments and adjust the segments, double-click green dots to delete segments. It may be possible to do it via a DXF import but I have not tried that. (I have tried a trick by editing the EasyEDA Source file but sadly once the file is saved and reopened, the outline is lost.)

OK. Thank you for your answer. I would like to have some more mechanical skills within easyeda. It is really a great tool but mechanical skills are missing.

Can you give some examples?

Yea.. It would be nice if they included milling layer.. Most production houses have the capability to use this layer to mill slots, rounds, and pretty much any shape you could possibly need. In my case, the board i'm designing will fit onto a spindle shaft, and requires a hole in the middle, as well as for the circuit board to be round to clear other mechanical parts.

Hi ArcAiN6 , Welcome to EasyEDA. You can create any holes or slots that you may require using the `NPTH` option of the `Solid Region` tool. You can also define pads to be in the form of slots. Please see this thread for more: https://easyeda.com/forum/topic/Custom_shaped_PCB-SQK2kewO6