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Home made machine

A

Anonymous

Guest
Here is a machine we have been testing,a friend of mine designed and built it.So far no showroom machine can beat it in depth and discrimination.It can work in all metal with just the meter ID, or switch it on to discrimination.
 
Looks very interesting , what types of site has it been tested on so far ?
PS if anything needs patenting do it asap , if the big boys want a slice of the action they'll have to pay a license <img src="/metal/html/smile.gif" border=0 width=15 height=15 alt=":)">
 
Hi Peter
We have 2 machines on test,they are proving to be very deep indeed.We have only searched on grass fields so far,some targets were just to deep for us and we left them for another day,when the ground is softer and its a little cooler.
Gary
 
Looked on your site and read up on it , looks "prototype" , (obviously) and the coil shape looks odd , but it's the performance that counts - perhaps that is the way coils "should" look.
How is the pinpointing, especially at depth ?
Also you describe it as a hoard hunter that will also find small targets - how small is small ? are there any plans to produce a run of these or only one-offs when ordered?
If visual TID could be incorporated , your friend could be onto a real winner.
Nice to see a one-man-band making detectors with better performance than the big players can manage.
If I could justify/afford it , I'd be down for a demo. <img src="/metal/html/biggrin.gif" border=0 width=15 height=15 alt=":D"> good luck HH
 
The machine takes a little getting used to,but everything is practical.The stem looks odd,but its easier to swing from left to right than the conventional "S" stem.The coils are very light indeed,pin pointing is good a coin on edge catches us out now and then.George is looking at a new type pin point probe capable of 4-5 inches depth.This machine has found us tiny hammered coins at good depths, big deep targets give a loud clear sound.In fact while searching in this hot weather I find myself dreading the next signal.He will not be making a machine with visual TID,George hates gimmiks,this is real a boot and braces machine I have never used anything like it,factory machines dont even come close.
He will be making them to order hopefully we will have one or two in stock soon.Believe it or not it actually takes around a week to make just one machine.
As for price it compares with an Explorer.....Gimmicks or performance.
 
The time involved is no surprise, and as you say the Explorer is the obvious machine for comparison.
I like TID for areas with lots of junk , but on quieter sites it's good to just listen to the signal.
How is it at target separation and discrimination ?
 
It depends on what coil used,coil sizes vary from dual 17" down to dual 4".The tiny coil works well and is great at target seperation,with good depth.I like the 9" coil as it can blast past surface nails and pick up good targets underneath, as long as they are bigger than the nail.
Gary
 
Gary
How effective is the coin ID feature(the absence of the click)? Can it distinuish between pull tabs and coins?
I tried to E-mail you but I guess your spam blocker knocked me out.
George
 
Hi George
A ring pull will give a very good signal,when rejecting Iron only,they can be rejected by turning up the discrimination. I know you guys in the US can have big problems with them.
Thanks
Gary
 
Hi Gary,
So many times in my 28 year detector experience, I have been told: "we got it, the ultimate metal detector!" Very often, it was only hype. As I told you yet in a private mail, my favourite metal detectors are of "non motion" type, so I exspect your prototype detector to meet my requirements or at least approach them.
One of the toughest tests for a metal detector is the target mask test. When you are writing <BLOCKQUOTE>it can blast past surface nails and pick up good targets underneath, as long as they are bigger than the nail</BLOCKQUOTE>I consider this indication is too vague. Many modern motion detectors can detect non iron stuff close to or under a nail. The non iron object has to have certain minimum size.
Just take an iron nail (length: 5-7 cm), set your detector to reject nails, and put then a coin shaped copper disc of 1.0 cm diameter under the nail. If your prototype detector gives both a positive audio signal and a positive reading on the signal meter, it is an outstanding detector! If not <img src="/metal/html/sad.gif" border=0 width=15 height=15 alt=":sad"> <img src="/metal/html/sad.gif" border=0 width=15 height=15 alt=":sad">
Copper discs of less than 1.4 cm (put underneath a nail) won't produce a clear positive signal on motion detectors. They chatter as if there was only an iron nail lying there. IB/TR non motion detectors are the only detectors able to see through nails and detect tiniest good (i.e. non iron) targets!
So I am waiting for further, more detailed tests.
Regards,
Andr
 
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