Made my first coil with the new swivels today. Got almost half way with the wrapping yesterday evening and the battery was flat. I will charge at once from now on, when I notice it getting weaker.
Owner P-17 Ball Bearing Swivels Size 2 (Ebay) are much better than the Berkleys.
S316L, 28g x2 and 42g wrapping. And I thought 38g was fragile...