Yea I did wonder about that, as I know you use a sponge, no I can't say that I have, but I have duct taped the hose of the Hoover to the grinder to catch most it which if positioned right gets a fair bit of the dust, just using a Henry, but a deeper version of that shroud, could work nicely, on another note, I've just started using pads from rightlines, for working the back of my mitres, they seem to be lasting longer than the ones I had from ats last time, about 30 linear meters worth out of it so far on hard as, 10mm porc and it's still not even half way worn yet, dunno what you are using atm, it's just a heads up mate