My question is - posted it on another thread with no answer - how best to judge shielding performance at bench level (before the coil is covered)? I mean I know how to see if the material is detectable but how to test shield effectiveness? Do they all work the same at this point or are some materials better than others?
I've read where it is best to have a spacer between coil and shield. This is apparently not the case in cables.(?)
There is talk about conductivity per inch. How does this relate to a good shield?
We have several cans of conductive nickel spray at work - used for shielding plastic cases. So if I took this and sprayed the circumference of a coil, connecting ground one end, other end open, would it work well? Would a spacer improve it?
I can take shielding off USB cables - it comes off in a nice tape-like strip. How to compare it vs other metalized mylar materials for our purpose?
Lastly, the part about leaving a gap on a coil shield - isn't this rather ignored in the case of Minelab coils where the coil is encased in a graphite paper housing?
I've read where it is best to have a spacer between coil and shield. This is apparently not the case in cables.(?)
There is talk about conductivity per inch. How does this relate to a good shield?
We have several cans of conductive nickel spray at work - used for shielding plastic cases. So if I took this and sprayed the circumference of a coil, connecting ground one end, other end open, would it work well? Would a spacer improve it?
I can take shielding off USB cables - it comes off in a nice tape-like strip. How to compare it vs other metalized mylar materials for our purpose?
Lastly, the part about leaving a gap on a coil shield - isn't this rather ignored in the case of Minelab coils where the coil is encased in a graphite paper housing?
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