ON covering tools to keep dust off, not something i would do, not much on trying to keep tools clean, it shows people that do come by or know about tools that you know how to use them and how much they are used, just me,
What I would be covering up or making sure of, is the return air ducts and adding more filters or someway to vent out the dust, this could be a fire hazard, anyone ever see a sawdust fire, its like a flash fire and its not nice, you did say it was heated and cooled, correct,
please check this out, Poppa Rob