How to Solder Stainless-Steel Sheet Metal

By Rebecca Suzanne Delaney ; Updated September 15, 2017

Things Needed

  • Soap and water
  • Acetone (optional)
  • Sandpaper (optional)
  • Flux
  • Soldering brush
  • Charcoal block
  • Third hand (optional)
  • Binding wire (optional)
  • Solder
  • Torch
Learn to solder stainless steel and make household items

Stainless steel-sheet metal can be formed, fabricated and soldered to make all kinds of household items. You can make jewelry, sculptures and kitchenware from the material. Stainless-steel bowls, platters, pots and pans are prized as kitchenware. Soldering stainless steel can be tricky, so take care when preparing to solder.

Wash the stainless steel you plan to solder to remove all oxidation, grease, grime and dirt. Stainless steel should have little or no oxidation, but use sandpaper to remove it if necessary. Use soap and water to wash grime and dirt. Use acetone to remove grease.

Place the stainless-steel pieces on a charcoal block or other soldering surface. Check that the seams of the stainless steel are flush. Solder does not fill gaps. If the seam has a gap, you will not be able to solder that portion. Use a third hand or binding wire to hold the stainless-steel pieces together if gravity alone will not work.

Paint flux on the seam of the stainless-steel pieces, using a soldering brush.

Put a small amount of medium silver solder at one end of the seam.

Heat the stainless steel evenly until the solder begins to flow. Once the solder is melting, run the flame of the torch along the seam. The solder will follow the flame. Check your work, and allow the soldered stainless steel to cool to room temperature.

Warning

Take precautions when using a torch.

Take care when working with chemicals, including flux.

About the Author

Rebecca Suzanne Delaney began publishing in 1980. She is a university-trained artist and the author of dozens of books and articles on a variety of topics, including arts and crafts, law, business and public policy. Delaney earned degrees in liberal arts, psychology and law.