How can i make a metal detector

		Quote:			Posted by xavier
	Sorry but I did think that it was funny I must say that snow looks dam good on a post cards and I do miss having a white Christmas. Over here it dose not feel like Christmas with all that heat. And I also like a good old log fire  .See you to could tease me  only thing is when you got to go out at night to get more fire wood man now thats cold. Have a nice one for me Best regards Xavier

I'm originally from the northern climates in the USA and miss the white Christmas, too. When I first got here, I was informed that the ideal and traditional Christmas dinner in Australia is stuffed roast chicken and Champagne on the beach.

Mostly we stay indoors on days that are over 40C and count our blessings for air conditioning. One year, though, I did put on a wetsuit and went diving with my detector. Fun times and much cooler than in the air.

Goldigger says he has 4 feet of snow at the moment. We could use some of that down here.

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I have a Garrett Sea Hunter PI machine. I use it now for shallow water snorkeling. I am designing an electric dredge for it that uses the 14.4 volt battery packs from portable tools to drive a 12 volt bilge pump. That pump sends high pressure water into a Venturi pump of my own design which sucks up the sand and targets from below the coil. The water, target and sand then go to a collection basket where it is filtered. When complete, I will post all details here.

Electric means relatively silent but it is similar in function to the gas powered ones that are out there. There was a post here on these forums to a link showing the operation of one. Fascinating.


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Xavier, the Venturi pump using water is 25 or more times more able to move volume than the air jet. The air jet moves water faster but the water Venturi is stronger. I have designed it to be used standing up to shoulder deep in water. The entire unit, with the coil mounted to the end, is about 7 foot tall.

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Xavier, I hate it when that happens. Don't PCs know how inconvenient they can be when they crash?

I left something out of my last post. My unit is being built for wading use up to shoulder deep, not for diving. It will be waterproof but not for depth. When you asked about depth, for some reason I was thinking how deep will it suck up the sand.

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		Quote:			Posted by xavier
	Hi Goldigger I had a look at your area on google man looks like you live in the middle of nowhere and I forgot about that snow he he we are going into summer now getting nice and hot.

Yes, in my home-town, 47 miles north, we had a saying that Fort St. John was the a--h--e of the world. Here, we are in the edge of the foothills of the Rockies and it is about 70 miles to the Pine Pass, the real mountains. but if we go southwest, it is only about 30 miles to mountains. It is about 750 miles to Vancouver, 455 miles to Edmonton Alberta and 635 miles to Whitehorse, Yukon.

If you want to see "nowhere," look at the Kemess mine area and the mountains around it! Thar be gold thar! I can give you  lat/lon, later.

goldigger

		Quote:			Posted by xavier
	Well GD I do the same I think of one thing a say another but I?m told that only great mind?s do that I take it that you will be using your ventury pump for gold excavation? Ho yes I love to hate my PC as it tends to do the things that it should not just at the wrong(right) time like I need to do a backup as I have not done one in the last 6 months it about the time that it will play up just be for I actually do that backup. I'm still looking for those dam photos

I put my photos off on a thumb drive, this way they do not mysteriously disappear..... anymore.

I had trouble with the last post because the system said I had already posted it! Sometimes this system plays little tricks, too.

goldigger

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