you can use rocks on the up-stream end to form a wedge which will direct more water flow (and speed) into your sluice
This package has the Thinner already added for you
• Brass Chrome Plated Handle & Rim Around Lens
Pulp Balance
* Insulating brick lining for maximum heat retention
Refining Precious Metal Wastes + Chapman Flux,Thinner,Borax +2 Molds jewelry you can use rocks onYou will receive the following; The Book "Refining Precious Metal Wastes" by C. M Hoke 362 pages (Softback) How to recover the precious metals from wastes products of jewelers, dentists, photographers, electroplating, stripping solutions. Covers the equipment, chemicals, and procedures used, as well as the economics of refining the various kinds of wastes. Identifying metals in solution. Also discusses rhodium, ruthenium, and osmium. The Black flux is