Wet better than dry - Frankford Arsenal Rotary Tumbler Lite Professional Kit

Over the years I’ve learned that those who dry-tumble casings really open themselves up to inhalational injuries, as well as exposure to dust and chemicals that get blown around during and after tumbling. You can place the tumbler in an area with fresh air supply, but the dust will still accumulate. For these reasons, wet tumbling is really the only way to go.