On Wed, 2022-04-27 at 22:56 -0700, wu.weikang via groups.io wrote:
?I know one can add Custom shape for SMD pad . and one can define round or oval drill,? but I found no way to define and arc-shape drill route.
May be I have misunderstood your question, but arcs can be placed in the Edge Cuts layer, which defines how the PCB outline is routed. This is also how you might puts slots and other kinds of cutouts within the PCB. For internal arcs, remember to check with your PCB manufacturer what cutter sizes they use.
Tony Casey