Dreaming of sawdust, signifies that grievous mistakes will cause you distress and quarreling in your home.
Dream dictionary: Sawdust dream meanings
Sawdust usually represents luck and dreaming of it is a good sign. We must be aware because just around the corner, we expect to have a struck of luck, that is often related with business or money.
If you saw the sawdust, then the dream offers to get rid of the emotions that were caused by some serious thoughts.