Gold Mining , Gemstones, Trommel and Drywasher Plans

Pricing & History

Sold for
Start Free Trial or Sign In to see what it's worth.
Sold Date
Source eBay

SENT BY EMAIL AFTER PAYMENT BY PAYPALDRYWASHER PLANSThis DRYWASHER, not for gemstones, is well designed using modern light-weight, long-lasting materials. It can be back-packed over rugged terrain and pulled over long distances on bicycle wheels that double for hand crank and driven flywheel if powered by a small 39cc (2.4 cu. in.) 2-cycle motor typically used on a weed eater, small chain saw or hedge trimmer. Frame construction is aluminum and peripherals are easy to find materials from a fabric store and Home Depot or Lowe's. These machines work well in the arid climates of Arizona and California or anyplace w the process material is dry. The questions always come up: How much does it cost to build and how much will it process? Cost could vary from $350 using all new materials to as little $50 to an experienced builder using salvaged materials. It should last for years and years. I'm not going to attempt to answer the second question other than to say that east of Palm Springs about 50 miles and south another 20 miles was w we first tried out this machine. It was hard work and bitter cold every morning, but 8 days yielded 2 ½ ounces...about $1200 at the time. Questions? . Other equipment plans available.The trommel is powered by a 5-8 Hp horizontal engine. The process water pump is powered by a 5 Hp horizontal engine, direct or belt drive. The welded chassis triples as a water manifold and spark free exhaust system which makes this a very quiet machine. Process is through a generous top loading hopper (4 cu.yds/hr. est.) fully flooded with process water to prevent clogging and into a cylindrical trommel which separates ore by mechanical rotation (45 RPM) and high pressure water through a spray bar. The trailer is 2 or 4 wheel (both designs included) and makes-up with off-the-shelf components from Northern, Harbor Freight. Ore is sized as it tumbles full length through the trommel and falls through a grizzly onto a powered riffle (about 2000 cycles per minute) w the placer is captured. The riffle is emptied periodically into a large bucket and traditionally panned. Various materials may be used, astro-turf, pile carpet and molded rubber sheets of various articulations. Plans for a polyurethane riffle are included, a must for high efficiency recovery. The trommel is belt driven through a jack-shaft for the sake of simplicity and cost. The speed at mid-range is about 45 RPM. Even considering this moderate speed, a grizzly shield is necessary to keep water and ore restrained and directed into the riffle. The action of the powered riffle is adjustable to optimize the motion of various aggregates. This machine is designed to operate at a downward angle to optimize material flow. This is a simple, no frills machine capable of earning the average operator a living from various stream beds. Placer gold (free gold) is available in every stream in California and other streams throughout the US as small nuggets, flakes (gold that has been hammered to thinner than paper thickness) and flour gold (very small particles that have to be centrifuged [new machine coming] or collected with a mercury plate. Grass clusters along the bank of yielding streams contain (typically) hundreds, even thousands of various colors (gold).A note about DIAMONDS and GEMSTONES; this machine can be used to process either. Diamonds are processed worldwide taking advantage of a phenomenon that a diamond cannot be whetted. As a result, diamond bearing ore passing over a greased plate will stick and continue to embed deep into the plate as tailings was across. Plans are E-mailed after purchase through PayPal in .pdf format (Adobe Reader) free download from internet. If you gave to have .jpegs please ask. read more

Items in the Price Guide are obtained exclusively from licensors and partners solely for our members’ research needs.

Flag item for content or copyright

If this item contains incorrect or inappropriate information please contact us here to flag it for review.

If you are the originator/copyright holder of this photo/item and would prefer it be excluded from our community, contact us here for removal.