A riffle dry washer is a type of gold prospecting equipment used to recover gold from dry material without the need for water. It’s especially useful in arid regions where water is scarce. Here’s how it works and what you should know:
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How a Riffle Dry Washer Works:
1. Air Flow & Vibration – A motorized fan or bellows blows air through a cloth or screen, separating lighter material from heavier gold.
2. Riffle Tray – The material flows over riffles (obstructions) that trap heavier gold while allowing lighter sand and gravel to wash away.
3. Recovery Matting – Often, miners use carpet, mesh, or spe.jpg)
lized matting beneath the riffles to catch fine gold.
Key Features:
– No Water Needed – Ideal for desert prospecting.
– Portable – Many models are lightweight and foldable.
– Motorized or Hand-Cranked – Some use electric/blower fans, while others rely on manual operation.
Tips for Using a Riffle Dry Washer:
– Classify Material First – Pre-screen dirt to ½” or smaller for better efficiency.
– Adjust Airflow – Too much air can blow out fine gold; too little won’t separate waste properly.
– Work Downhill – Position the dry washer on a slope to help material flow.
– Check Riffles Often – Gold can get trapped in crevices or under matting.
Popular Models:
– Royal Manufacturing King of the Desert
– Thompson Dry Washer
– Gold Buddy Vibra-Lite
Would you like recommendations on building your own DIY riffle dry washer? Or are you looking for buying advice? Let me know how I can help!