Silver Paste Solders-Extra Easy,Easy, Medium & Hard

Silver Paste Solders from Otto Frei offer four flow-point options — Extra Easy, Easy, Medium, and Hard — giving jewelers and metalsmiths precise control over torch soldering sequences. Each syringe contains approximately 10 pennyweights (10 DWT / ½ troy ounce) of silver solder pre-mixed with paste flux, making application clean, consistent, and easy to control. The paste extrudes directly from the syringe for accurate placement on your work. This paste silver solder is intended for hard (torch) soldering — brazing — only. All formulas are cadmium-free and lead-free.

The grades Extra Easy, Easy, Medium, and Hard describe the relative temperature flow points within a solder family. Extra Easy flows at the lowest temperature; Hard flows at the highest. As a general rule, higher flow-point solders carry a higher silver content, which improves color match to sterling silver and can contribute to stronger bonds. When manufacturing, begin with the hardest (highest-temperature) solder so that subsequent repairs can be made using lower-temperature grades without re-flowing earlier joints. When making repairs, use the lowest-temperature solder available since the alloys used originally are unknown.

Warning: Paste flux contains fluorides. Use in a well-ventilated area.

Features

• Four flow-point grades available: Extra Easy, Easy, Medium, and Hard
• Pre-mixed with paste flux for ready-to-use convenience
• Syringe delivery allows precise, controlled application
• Each syringe contains approximately 10 DWT (½ troy ounce) of paste solder
• Cadmium-free and lead-free formulas
• For hard (torch) soldering / brazing only
• Paste flux contains fluorides — use with appropriate ventilation

Specifications

Available Options

Notes

• Flow-point grade labels (Extra Easy through Hard) are relative within a product family. Flow temperatures can vary between manufacturers — one maker's Medium may flow at the same temperature as another maker's Hard.
• Paste flux contains fluorides. Ensure adequate ventilation when using this product.