re: Oval cut

It’s going to be more difficult w/o a band saw to be sure. The way to do it is to make a template first from 1/4" MDF, cut it out w/ the jig saw then sand and smooth the edges until they are fair. Then trace the template onto to the table top and cut it w/ the jig saw staying slightly outside the line. Then attach the template w/ double stick tape and using a pattern bit in the router trim the ragged jig saw edge smooth. Remove the template. Then finally run a bull nose using a round over bit w/ a bearing.