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Anyone: Using a 100kHz unit, how does it react to bottlecaps? :smoke:
Posted by: vlad
Date: April 20, 2019 07:08AM
I know the bc's are a steel alloy and I never tried it on one back in the day.
Does the trick just work on nails and smaller? At what size is a mass of iron accepted?

Re: Anyone: Using a 100kHz unit, how does it react to bottlecaps? :smoke:
Posted by: Tom_in_CA
Date: April 20, 2019 08:39AM
Quote
vlad
I know the bc's are a steel alloy and I never tried it on one back in the day.
Does the trick just work on nails and smaller? At what size is a mass of iron accepted?

If I recall, if the bottle cap was fresh, I think it would give a signal. But if it were rusty and corroding, then it wouldn't.

As far as the rest of your question: Yes, the see-through trick (and nulling over iron) worked only @ smaller iron. Like individual nails. Larger iron, like a RR spike sized item, or cast-iron fragments @ domino-sized and larger, would start to beep. But to a trained ear, you could often still ID those larger iron items. Because there would be a momentary null on the leading edge of target.