Bosch Miter Saw Dust Box
I don’t really know if this worked as well as it could have, but, I sold this saw and obviously gave up. Maybe with some tweaks it could be something you could use? (perhaps a zero clearance insert? or, different dust holes on the front?)
This along with many other miter saws spit dust everywhere, so, my thought was to minimize that and collect it in this box, with a vaccum attached to the back. (pic to the left does not have dust port cutout yet)
the front face is one pieces of .5 inch ply, sitting in the upper fence channel
front face of the ply
cutout for the dust port
back glued on with port attached
bottom view of box