Fine dust is always a problem. It's difficult to control it with shop vac attachments and stuff. Hand held power tools are the worst to control and shop vac attachments are the least effective on these. I would suggest that you get one of the air cleaners such as the below items:
http://www.amazon.com/708620B-AFS-10...2970291&sr=1-1 http://www.pennstateind.com/store/ac620.html
Corey