drill as series of holes ontop of each other and use a chisel to remove the excess.
this leaves you with an elongated oval in the up/down direction.
you have infinite options for up/down, but the in/out direction of the gate is still limited to "closed"
this leaves you with an elongated oval in the up/down direction.
you have infinite options for up/down, but the in/out direction of the gate is still limited to "closed"