Im close to pulling the trigger on one of these.
Automatic filter cleaning system Bluetooth-enabled remote activation Suitable for wet/dry extraction Approved for dust class M Festool CLEANTEC CTM MIDI I AC M-Class Wet and Dry Mobile Dust Extractor 15L 110V GB - 578551 The Festool CTM MIDI I AC 110V AUTOCLEAN Dust Extractor (578551) is a...
tools4trade.co.uk
Its a lot of money for a hoover but you really need at least 1200w of suction to hover from saws. I have been using two henrys 2x600w in the shed for woodworking and dust still escapes whilst cutting.
I cut a hole in a concrete floor the other day in a garage at least 600mmx600mm, using a 9 inch grinder with a dust shield and there was virtually no dust with 2 henrys on the job.
Obviously two henrys are impracticable hence the above.