Tmoose,
Yes I can feel the vibrations on the grinder hopper.
The room is 36' long, 12' wide, 12' high.
The walls are hard (smooth wipe-down)
The grinder is maybe 6' from a side wall and 8' from a back wall (estimating)
Reza Mech,
So far I'm leaning towards a polycarbonate enclosure framed...