How to Build a Mini High Banker
Construct a portable mini high banker with pump, hoses, and matting for efficient creek prospecting.
Introduction
A compact high banker lets you process material away from swift currents, recirculating water efficiently while capturing fine gold.
Equipment and Materials
- Frame materials (PVC/aluminum), matting, pump, hoses, clamps
- Tools for cutting/fastening, sawhorses or stand
Step-by-Step Instructions
1) Design the frame and sluice angle
Size the tray and set an adjustable angle mechanism to handle varying feed rates.
2) Install matting and riffles
Seat matting flat with even clamp pressure for consistent contact.
3) Configure pump and plumbing
Match pump flow to tray width and matting; include a simple valve for control.
4) Test and tune
Run small batches to dial in flow and angle before full production.
Pro Tips
- Use quick-release clamps for fast cleanup.
- Add a header spray bar with even distribution.
- Seal potential leaks to maintain flow efficiency.
Common Mistakes
- Oversizing the pump—causes turbulence and blowouts.
- Flexing frames that change angle under load.
- Poor matting contact leading to gold loss.
Troubleshooting
If gold rides over, reduce angle slightly or add a small flare to calm water at the head.
FAQ
Battery or gas pump? Depends on runtime; consider noise limits and site rules.
Matting type? Choose based on sediment and desired retention; test.
Conclusion
A well-built mini high banker boosts throughput where sluices are impractical.
Related guides: Use a Sluice Box · Process Concentrates