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Gold Prospecting
Do It Yourself (DIY) Projects
Bunnings timber sliuce
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<blockquote data-quote="dwt" data-source="post: 70811" data-attributes="member: 428"><p>you could try dropping the riffle size down from 25mm (1") flat bar to 16mm (3/4") flat bar, if this is out of your budget then drop every 2nd riffle out give a chance for heavies to settle and lights to get a smooth run over the riffles, there is no real law on riffle height, any piece of gold bigger than .3gram is not going to climb a 10-12mm riffle,(unless it gets a smack in the mouth from a larger rock), after many faild experiments i found that spacing out riffles has a better cleaning effect on your box than closely fitted ones,your aiming for most of your gold to get trapped within the first 2 riffels after that the rest are basicly back ups, unless your running 10-20 yards an hour through your box and cleaning up once a week. also try and spot weld your riffles from the inside, makes for a smooth water flow of the leading edges.</p><p>If you have enough riffle material knock up yourself a couple of trails and test them in the field for yourself, you will eventually find the one that suits your ground/water speed/and feed rates, everyone is different.</p><p>Nice job mate and good luck <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p></blockquote><p></p>
[QUOTE="dwt, post: 70811, member: 428"] you could try dropping the riffle size down from 25mm (1") flat bar to 16mm (3/4") flat bar, if this is out of your budget then drop every 2nd riffle out give a chance for heavies to settle and lights to get a smooth run over the riffles, there is no real law on riffle height, any piece of gold bigger than .3gram is not going to climb a 10-12mm riffle,(unless it gets a smack in the mouth from a larger rock), after many faild experiments i found that spacing out riffles has a better cleaning effect on your box than closely fitted ones,your aiming for most of your gold to get trapped within the first 2 riffels after that the rest are basicly back ups, unless your running 10-20 yards an hour through your box and cleaning up once a week. also try and spot weld your riffles from the inside, makes for a smooth water flow of the leading edges. If you have enough riffle material knock up yourself a couple of trails and test them in the field for yourself, you will eventually find the one that suits your ground/water speed/and feed rates, everyone is different. Nice job mate and good luck ;) [/QUOTE]
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Gold Prospecting
Do It Yourself (DIY) Projects
Bunnings timber sliuce
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