I have an open frame '97 Partner MB16.
It looks like it used to be setup for flood but all the pieces are missing.
While I'm sorting the wet side out, I started playing with milling some test pieces and as expected, chips are flying everywhere.

What have you done to contain the chips to the frame of the machine?
I'm thinking of bending a piece of 1/2" or 3/4" EMT conduit, mount it to the head of the machine and use some sort of shower curtain thing to keep the chips within a foot or 2 of the cutting head.
Perhaps, fabricating a tub of some sort that would mount to the bed.