Help joining chair/dado rail


What is the best way of joing these two rails (in screen cap below) togather at a clean 90degree angle.

I’m trying to achieve the look in the photo below, but cant figure out how to cleanly join the two rails.


Any help/advice would be much appriciated.

Many Thanks,

The basic method is follow me.

1 Like


Thank you for your help, I didn’t know follow me could be used like this.