davidclayton
New Member
complete newbie here, i know nothing about metal detectors. i hope i came to the right place :tumble:
i have a couple of questions that i would love answers to, and would appreciate any advice you could give me:
1. most of the detectors i have seen have coils with fairly large diameters, and the direction of use is pointed so that the coil is parallel with the ground. For example:
does the diameter have to be large, and does it work if the metal object is perpendicular to the coil?
2. The most common material used for coil housings is plastic. Are there any tougher materials that allow the magetic field to pass though? - for example: Graphite, ceramic, etc.
My idea was this.. to build a metal detector using a very tight coil wrapped all the way down inside a large marker like this:
Would it work if the coil diameter was this small? and would it only detect from the end of the marker, or would it detect perpendicular to the shaft of the marker aswell?
i have a couple of questions that i would love answers to, and would appreciate any advice you could give me:
1. most of the detectors i have seen have coils with fairly large diameters, and the direction of use is pointed so that the coil is parallel with the ground. For example:
does the diameter have to be large, and does it work if the metal object is perpendicular to the coil?
2. The most common material used for coil housings is plastic. Are there any tougher materials that allow the magetic field to pass though? - for example: Graphite, ceramic, etc.
My idea was this.. to build a metal detector using a very tight coil wrapped all the way down inside a large marker like this:
Would it work if the coil diameter was this small? and would it only detect from the end of the marker, or would it detect perpendicular to the shaft of the marker aswell?
