A silver solder sheet kit puts three flow points on the bench at once, so a fabrication run and a later repair can each get the grade it needs. The Silver Solder Sheet Kit from Harmony is a practical starter and reference set for jewelers and metalsmiths working with silver, holding one small sheet each of three cadmium-free silver solders that span a range of flow points.Features Includes three cadmium-free silver solder sheets covering soft, medium and medium-hard flow points Total weight of approximately 15 pennyweights across all three sheets Sheet format cuts and portions easily at the bench Cadmium-free formulation for safer studio use Spans a practical flow point range of 1260°F to 1375°F NotesWhat you get: 804-405, Soft, flow point 1260°F 804-406, Medium, flow point 1295°F 804-407, Medium-Hard, flow point 1375°F Silver solder grades, Extra Soft, Soft, Medium, Medium-Hard and Hard, describe the relative temperature flow points within a solder line. Extra Soft, also called Extra Easy, flows at the lowest temperature, with each successive grade flowing at a progressively higher temperature. Generally, a higher flow point corresponds to a higher silver content, which improves color match to silver and can contribute to a stronger bond.Flow point temperatures vary between manufacturers. One maker's Medium may flow at the same temperature as another maker's Hard, so always verify flow points when mixing solder brands.For fabrication: Use the highest temperature (hardest) solder available so that subsequent repairs can be made with lower temperature solders without disturbing existing seams. For repairs: Use the lowest temperature (softest) solder appropriate for the job, since the solder grade used previously is often unknown.