Plans to design and build your own gold prospecting equipmentHome built sluice under construction. Some Construction Thoughts And Guidance For The Person Who Wants To Build Their Own Prospecting Stuff by Someone Who Has Done It. Homemade Dredge on the water . I am a individual prospector and a dyed in the wool do-it yourself enthusiast as well. I have a degree in.diy gold crusher plans for home use,DIY Impact Mill/Rock Crusher - Crush Anything (Gold Ore, Circuit .Oct 11, 2015 . I built an impact mill that will crush a 4" rock into powder in under 1 second. This rock crusher is also known as a chain or a flail mill. I also run some aluminum cans and a circuit board through it. Here is the forum thread I based my design off of: .treasurenet/forums/har.