Almost everywhere online recommends using a Henry. I already have a Vax 9131 which is very similar, but when I say cleaning up plaster dust, I mean a lot of it. At the moment I don't even get a minute out of it when cleaning up after DIY jobs, but it seems fine again with a new bag... for another minute.
I saw Ash Vacuum Attachments in town today and I thought that seemed like a likely solution. I'm not sure how they work or if they're suitable.
Then I wondered if I could put a lot of water in the base of my 9131 and suck all the air through the water in order to catch the plaster particles. Seems like it might work.
What experience have others got with this problem? No-one's allowed to suggest the Henry ;) What makes industrial vacuum cleaners different?
Thanks :)