This seems like a pretty basic question. Someone has probably asked it before, but I didn't have any luck digging up an answer using the search function, so here goes.
I was sanding some plywood pieces for a closet organizer I'm making, and a look at all the dust covering everything made me think that maybe a downdraft table would be a good idea.
If I were to build one, is there any limit to how long I can leave my dust collector running without giving it a break? Are they designed to run indefinitely, or do they need a smoke break every 15 minutes? How about a shop vac? For that matter, how about the sander itself? If it hasn't burst into flames in my hand, is it doing ok? I can spend 30-40 minutes churning through one sanding pass on all the pieces.
Most of my other machines don't get used for long periods of time, but I could see putting in marathon sessions on a sander and downdraft table.
Do I actually need to worry about this, or am I just being paranoid?