coil amp

Do you know how to make coils? Making your own coils requires knowledge in electronics knowing how many turns to have. I am wondering if a coil base can be made using a 3D printer and wire from a transformer can be used for the wire wounds. I wish I had a 3D printer and also I wish I knew of...

Reaching out to the forum, especially those who have built their own coils for the sovereign/excal detectors. I am interested in building/modifying a few coils for my blue excal in an attempt to customize them for my particular area and gain the best depth and stability. With my research so...