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Author Topic: DIY Equipment Plans (52 and Growing)  (Read 185401 times)

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Offline Guest

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Re: DIY Equipment Plans (52 and Growing)
« Reply #40 on: November 17, 2009, 01:14:14 PM »
Actually the different materials, shapes and styles used over the years to act as riffles would amaze you, I have seen riffles made from tree limbs, don't remember if they were spruce or cedar or what, now they weren't any good at catching fines bit they did work to a degree and the guy was happy looking for nuggets.

During the old days of the Cariboo Gold rush the miners didn't have access to metals or cut lumber to begin with, so they used what they had at hand, their brains and simple tools, the Romans used carefully collected cobbles of a even size to line their sluice with there by making it easier to identify the concentrates, the old timers sometimes used to split planks to make a rough sluice and then with a brace and bit (light weight and easy enough to pack into the back country) drill holes into the bottom of the sluice to collect the heavies, in the big hydraulic sluices used in the Cariboo 4-6-8 ft wide and 100s of feet long they used to cut blocks of wood, still round and stand them on end to act as riffles, with the gold and concentrates fillling in the gaps between the blocks, now not very efficient but it did work to a degree, one of the reasons that working old tailing piles can be so lucrative and these riffle types could take a beating, ya gotta remember that when hydralicing they weren't classifying the material before running it through the riffles, the riffles themselves acted as the classifier in a lot of cases..Greywolf

Offline Drakien

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Re: DIY Equipment Plans (52 and Growing)
« Reply #41 on: November 22, 2009, 02:46:28 PM »
This is a handy resource  [-1st-]

Offline JK34

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Re: DIY Equipment Plans (52 and Growing)
« Reply #42 on: November 29, 2009, 07:21:21 PM »
DIY is the way to go

Offline JK34

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Re: DIY Equipment Plans (52 and Growing)
« Reply #43 on: November 29, 2009, 07:23:13 PM »
Just tryin to get 2 posts to look at the downloads area.

Offline azgoldprospectorbill

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Re: DIY Equipment Plans (52 and Growing)
« Reply #44 on: December 08, 2009, 09:05:55 AM »
Hello...just starting prospecting here in az.
 Bill

Offline azgoldprospectorbill

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Re: DIY Equipment Plans (52 and Growing)
« Reply #45 on: December 08, 2009, 09:11:54 AM »
Afternoon everyone,

Looking for some good plans for prospecting equiptment.

Bill

Offline Vagadero

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Re: DIY Equipment Plans (52 and Growing)
« Reply #46 on: January 09, 2010, 06:00:34 AM »
Does anyone know where is an striated home made wood sluice description?
A saw it once on the net but didn't find it again.

Offline garyww

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Re: DIY Equipment Plans (52 and Growing)
« Reply #47 on: January 09, 2010, 10:43:08 AM »
I'm not familiar with the project you're looking for but making recessed (drop) riffles in wood or plastic is done using a router. I've heard that people are having the best success using a 'dovetail' bit which creates a recess with inward sloping edges. The old timers used routing planes and cut in groves and then pounded in thin copper or brass strips leaving one side of the strip protruding above the top of the groove by about an eighth of an inch. I think this created a small vortex in the recess.

Offline thrashmetalhead

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Re: DIY Equipment Plans (52 and Growing)
« Reply #48 on: February 01, 2010, 08:31:38 AM »
Hello I'm a beginner and cannot wait for your knownledge .



THANK YOU

Offline thrashmetalhead

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Re: DIY Equipment Plans (52 and Growing)
« Reply #49 on: February 01, 2010, 08:34:00 AM »
Look around this site will take almost every answer for gold prostpect

 


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