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Old 10-13-2018, 07:26 PM
DbblTap DbblTap is offline
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Default Has anybody made a metal detector?

There is something I want to try but it involves making a giant "Coil".

Has anybody made one and how did you get it to work with a MD?

Thanks!

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Old 10-14-2018, 05:40 AM
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I have a friend who lives near me who has been building them for years. He guided me through building one and it works but is a wall hanger when you own a good machine you are in tune with. I used a Manta board he gave me and made the box, arm cuff, shaft and wired everything. The coil I used was supplied by my friend also, he makes them from scratch. He vacuum molds the shells, winds the coil wire and pours the epoxy. I actually have a shell next to me that I am going to wind when I get time.

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Old 10-14-2018, 11:57 AM
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Yep I made one.. Back in the 60s, you could buy a kit from Raido Shack. It come with everything. It took me weeks to finish it, but I got it done. Put 2 lbs of batteries in it . It worked if you could see the item first and if it was big as a base ball, but it beeped.. KEN

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Old 10-14-2018, 02:36 PM
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Originally Posted by DbblTap View post
There is something I want to try but it involves making a giant "Coil".

Has anybody made one and how did you get it to work with a MD?

Thanks!

Sent from my LGLS775 using Tapatalk
Giant coils are best used with a PI unit. Fortunately, there are quite a few "build it yourself" PI schematics and kits floating around on the internet.

Here is a large coil PI (not mine).
Name:  keen_digger.jpg
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Old 10-14-2018, 02:55 PM
DbblTap DbblTap is offline
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Originally Posted by Rudy View post
Giant coils are best used with a PI unit. Fortunately, there are quite a few "build it yourself" PI schematics and kits floating around on the internet.

Here is a large coil PI (not mine).
Attachment 426346
Can this be Square and pulled behind me ?

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Old 10-14-2018, 06:06 PM
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Originally Posted by DbblTap View post
Can this be Square and pulled behind me ?

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Sure. I've also seen "two men" square coils in use. The hard part will be the longevity of the coil if you are planning to drag it.

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Old 10-14-2018, 06:07 PM
DbblTap DbblTap is offline
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Originally Posted by Rudy View post
Sure. I've also seen "two men" square coils in use. The hard part will be the longevity of the coil if you are planning to drag it.
I was thinking of putting it on skids of some sort.

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Old 10-15-2018, 04:01 AM
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In any area that has a decent amount of targets, a coil that big is going to be ineffective and a big headache
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Old 10-15-2018, 11:18 AM
waltr waltr is offline
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Originally Posted by DbblTap View post
There is something I want to try but it involves making a giant "Coil".

Has anybody made one and how did you get it to work with a MD?

Thanks!

Sent from my LGLS775 using Tapatalk
Yep, a re-designed Hammer Head from Geotech.
Lots of info and discussions on their forum.
http://www.geotech1.com/forums/forum.php
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  #10  
Old 10-16-2018, 06:54 AM
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Originally Posted by dirtykneese View post
Yep I made one.. Back in the 60s, you could buy a kit from Raido Shack. It come with everything. It took me weeks to finish it, but I got it done. Put 2 lbs of batteries in it . It worked if you could see the item first and if it was big as a base ball, but it beeped.. KEN
reminds me of my Heathkit CB Radio. It worked if the car you were talking to was right by behind you with bumpers almost touching. Bought a EF Johnson Viking CB, jumped it up to 10 watts and live was good in the CB world back then.

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Old 10-18-2018, 05:10 PM
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There's a warehouse full of parts out in AZ you could probably get a deal on

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