The dust really isn't much unless you're really taking a unit apart like above, and it's still minor because it's mostly in the bag or canister. 3 of my last 4 sales overnight were free vacuum parts, so your message was good karma. One thing I'll add is that I'll sometimes need to rinse out the canister and wipe it down with rubbing alcohol to make it look photogenic. That's also one great trick - rubbing alcohol on any marks. It makes almost everything come right off! Just make sure you test it on a small area to ensure that you won't take any finish or color off. Most surfaces handle it just fine.