: I need to knock down some drips/runs before final fill coat of epoxy. I
: scraped the most obvious offenders, then attempted to sand, using a ROS
: hooked to a shopvac. It works, but.... that epoxy plugs the filter very
: quickly. Any suggestions? I'm thinking I might be better off wet-sanding
: this. I presume a respirator is still necessary, even with the 'wet'.

Unless the epoxy is completely cured you do not want to sand it without using a respirator. Most epoxy isn't totally cured for at least a week, sometimes much more. Set up epoxy isn't cured epoxy.

Btw, after about a week it's alot easier to sand as it gets harder each day for at least a week if you have normal temperatures.

Bill H.