how to build a gold dry wash
# How to Build a Gold Dry Washer: A Step-by-Step Guide
Dry washing is an effective method for extracting gold from arid regions where water is scarce. Unlike traditional sluice boxes, a dry washer uses air and vibration to separate gold from dirt and gravel. Building your own dry washer can be a rewarding project that saves money and enhances your prospecting efficiency. Here’s a detailed guide on constructing a functional gold dry washer.
## Materials Needed
Before starting, gather the following materials:
- Frame: Lightweight aluminum or steel tubing for durability.
- Riffle Tray: Metal or plastic with riffles to catch gold.
- Fabric or Mesh: Heavy-duty cloth or expanded metal for material separation.
- Bellows or Blower: To provide airflow (hand-operated bellows or electric blower).
- Vibration Mechanism: Small motor with eccentric weight for agitation.
- Legs or Stand: Adjustable legs for stability on uneven terrain.
## Step 1: Construct the Frame
The frame supports the entire structure and should be sturdy yet lightweight for portability. Use aluminum square tubing (1-inch thickness) for the main frame, welding or bolting it into a rectangular shape (approximately 3 feet long and 1 foot wide). Ensure it has enough clearance underneath for material discharge.
## Step 2: Build the Riffle Tray
The riffle tray is where gold separation occurs. Cut a sheet of metal or rigid plastic to fit inside the frame at a slight downward angle (5–10 degrees). Attach riffles—small ridges—across the width of the tray to trap heavier gold particles while allowing lighter material to wash away.
## Step 3: Install Fabric or Mesh
Beneath the riffle tray, attach a fine mesh screen or heavy fabric (like burlap) to help filter fine gold dust while allowing waste material to pass through. Secure it tightly to prevent sagging under load.
## Step 4: Add Airflow System
A steady airflow is crucial for separating gold from dry material. For manual operation, construct bellows using plywood and flexible rubber sheeting, connected via hinges to pump air through the system. Alternatively, use an electric blower (like those from leaf blowers) for continuous airflow—just ensure it’s powerful enough to lift lighter debris without blowing away fine gold.
## Step 5: Incorporate Vibration Mechanism
Vibration helps stratify material