The fine fraction is the problem
Course shavings fall to the bench. It is the sub-micron dust from sanding, especially from MDF and hardwoods, that stays airborne for hours and reaches the deep lung.
Use case
Sanding, routing and sawing put the finest dust into the air, and that is the fraction that travels furthest into your lungs. A mask you actually keep on is worth more than one you take off after ten minutes.

Course shavings fall to the bench. It is the sub-micron dust from sanding, especially from MDF and hardwoods, that stays airborne for hours and reaches the deep lung.
Sweeping and blowing down a bench puts settled dust back in the air. Wear the mask for the cleanup too, not just the cut.
Masks come off when they are hot, damp or pressing on the nose. The valved and headband models exist for exactly that reason.
| Job | Suggested product | Why |
|---|---|---|
| A quick cut or two | VQ-DM100 Fold-Flat | Grab it, use it, pocket it |
| An afternoon of sanding | VQ-DM400 Headband | Wider contact area and headbands keep it in place |
| Hot workshop, long session | VQ-DM300 with Exhale Valve | Valve keeps heat and moisture out of the mask |
| Regular work, every week | VQ-RH500 + VQ-FP120 pads | Reusable facepiece, cheaper per hour, less waste |
Heavy duty · GB2626-2019
Built for the dusty jobs that take all afternoon.
Everyday · GB2626-2019
The classic cup shape, for long sessions in heavy dust.
Everyday · GB2626-2019
Everyday dust protection that folds flat into a pocket.
A mask is the last line of defense. Shop extraction and a downdraft table remove far more dust than any filter you wear.
Mold it, then press again on both sides. Most leakage on a fold-flat mask is a nose clip that was only pressed in the middle.
It turns a bench into an aerosol. Vacuum with a fine filter, or sweep gently while wearing the mask.
MDF produces a very fine dust and contains binder resins, so it is worth taking seriously. Whatever you are cutting, capture it at the tool and wear a mask for sanding and cleanup.
If you are cutting a couple of boards, the dust is limited. Move to a mask as soon as you start sanding, routing or cutting sheet material indoors.
Yes. Extraction removes most of it, but the residual dust around your face is what you breathe. Use both.