what specific machine are you trying to extract from!!
if you talking router planer or table saw then heavy duty extraction
if your talking sanding the henry/vax wet and dry with fine filter
I use a dust collector system which I bought off E-Bay. Its just a plastic tank with filters on the inlet side and the domestic vac just supplies the "suck"
Can't remember the make but a search on "dust collectors" should find it. It works fine on a table saw and planer thicknesser.
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