For classes I suggest you contact Robert or Hiroko Streppone at
Studio Jewelers, tel (212) 686-1944,
I’ve been taking classes there since last fall and find their
approach practical, insightful, centrally located (31st St/Park
Ave.), reasonably priced, with very good studio hours, and with a
solid repertoire of techniques to learn from, including soldering,
wax modeling, jewelry rendering & design, enameling, beading,
jewelry repairs & diamond setting among others.