One sneeze or glance at your phone to see what time it is, and you just bought a bunch of planks...
takes a little more than that to blow thru 1/32" of veneer hardwood.
(unless you're a ham fisted knuckle dragging cave man w/12grit on the roller)
if no finish sanding after drum, it's possible to see shallow dips with gloss finish when you look across the room in good light.
Note, that is speculation on my part, cause I've never NOT finish sanded after drum.
I just know you can't get it perfectly consistent the whole stroke or room.
Not just the machine technique, but all that wood isn't the same hardness either.
a piece of oak, maple or rainforest tree can vary in hardness from tree to the next.
even one part of the same tree to the other.
having said that, I think if I was doing veneered wood refinish (never have) the cimex like triple head sander would be safer methinks
..L.T.A.