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  • Magnetic field strenght vectors:
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    • This is the basket-weave solution for the TX and RX coils. The bucking coils shouldn't be basket-weaved as there is not much space for them. Let them solenoid or single loop type.
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      • Aziz .. so you have arrived back at where the AI told you to do all those posts ago

        Mate while you were doing that I downloaded the source code to openscad bolted an MCP server wrapper around it and now the AI has full control of the CAD program and can actually "see" the model because it is written in code.

        My first test was "Hey design me a single cylinder two stroke motor and animate it with a cutaway to view the workings" .... and bingo ... it listed all the parts ... drew them ... put them all together and animated it.

        Metal detector parts here I come. 1000 free lunches

        Click image for larger version

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        • Hi Paul,

          I also have got some 3D AI animated "coil housing" designs working. Grok AI made "outer-space" designs. It is Elon Musk biased.
          Claude AI is too busy to finish the job. A time limitation made me impossible to work with.

          But the coil housing design is really trivial. No one need AI.
          Cheers

          Comment


          • The two loop turns TX bucking coil helps to keep the total coil height relative low for good performance. The coil configuration should fit into a 3 inch height coil housing.
            It is better than the Z18 coil. The mild ground side of the coil (upper region) gives ultimate detection sensitivy.

            Here is the coil model:
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            A 4 inch height coil should do better and should be acceptable too I think.

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            • You want to be entertained? Ok, this is Grok AI bull$hit coil housing and mounting design proposal.

              Click image for larger version

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              • I’ve noticed that some crystal radios use basket-wound coils, and I think it’s worth trying.

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                • Hi c-zc,

                  Originally posted by c-zc View Post
                  I’ve noticed that some crystal radios use basket-wound coils, and I think it’s worth trying.

                  Yep. It is easy to wind, enables tight and stable coil constructions. It distributes the coil wires into large space and the coil capacitance goes down and the number of turns increases for specific coil inductance (ampere-turns), which increases the detection depth.
                  Use more rows to distribute the coil windings into more space.

                  Vertical weaved basket coils are the best. Do not use the spirally wound (horizontal) coils as they are not going deep.
                  Aziz

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                  • ... meanwhile I got the AI to build me this DD design. I just gave it descriptive commands and got it to optimise the crossover for balancing.

                    The AI looks at what it has done then corrects its mistakes.

                    Made for easy construction the coil formers can be edge wound adjusted and the whole lot glued together so nails and boards are a thing of the past.
                    Not bad for a first effort.

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                    • Hi all,

                      if I increase the number of turns for the TX bucking coil to 3, the RX bucking coil becomes 4 turns. Below the coil structure, it reduces ground noise further.
                      The hot ground side (bottom side) performs appr. same as Z18 coil. But the mild ground side (upper side) gives outstanding depth and sensitivity performance.
                      This is quite convenient for a dual-side IB-coil.

                      Click image for larger version

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                      • Originally posted by moodz View Post
                        ... meanwhile I got the AI to build me this DD design. I just gave it descriptive commands and got it to optimise the crossover for balancing.

                        The AI looks at what it has done then corrects its mistakes.

                        Made for easy construction the coil formers can be edge wound adjusted and the whole lot glued together so nails and boards are a thing of the past.
                        Not bad for a first effort.

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                        Very nice!

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                        • The dual-side search coils are the next big thing!

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                          • It's time soon to compare some coil configurations together in an Excel table. I'll make a standard target response sweep for +30/-30 inch at the center axis of the coil. 0 inch beeing the ground level. Mono coil will be available too. The figure-7 (Z18 ) and all the interesting new IB configurations.
                            So you can see, what we can expect on both sides of the coil.
                            After that, I'm going to search for further IB configurations.

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                            • This is the target response summary for a few coil configurations.
                              Blue is above the ground level.
                              Red (hot mineral ground) is below the ground level.
                              There is a zipped Excel file in the attachment.

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                              • The comparison should open up the eyes and need for dual-side coils now.

                                We want dual-side coils now!

                                Minelab, we want dual-side coils now!​
                                Coiltek, we want dual-side coils now!​​

                                We want dual-side coils now!​​​
                                Now!
                                One coil, two operating sides!

                                Comment

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