Pickling and Super Pickle

by Judy Larson
Since soldering produces fire scale on metal, pickling to remove it is a must.
Instructions
Pickling mixed metal pieces in plain pickle results in plating brass, silver, and nickel silver with a layer of copper.

Super pickle, a mix of half regular pickle and half hydrogen peroxide, solves that problem.

Super pickle works fast, so keep checking the piece. The fire scale will separated from the piece but sit on the surface so move it around when checking it.

The second photo shows a copper, brass, and silver piece after it was pickled in super pickle.
Judy Larson's Pickling and Super Pickle - , Metalwork, , plating metal
Judy Larson's Pickling and Super Pickle - , Metalwork, , metal after pickling
After pickling, the surface of the metal has a matte finish, use a toothbrush and water to remove any fire scale still sitting on the surface of the metal.

If the bottom of the piece contacted the bottom of the pickle pot, there may still be fire scale there. It may be necessary to put the piece in super-pickle again.
After the pieces are dry, a quick brushing with a soft bristle steel or brass brush will remove any little pieces of fire scale that were not rinsed away.

Brushing will also polish and shine dried pieces to a satin finish.
Judy Larson's Pickling and Super Pickle - , Metalwork, , brush for polishing metal
Judy Larson's Pickling and Super Pickle - , Metalwork, , brushing after pickling
A note on flux and fire scale
Fluxing pieces creates a barrier that helps reduce fire scale and improves the flow of chip and wire solder.

Paste solder contains flux, which helps with flow but doesn't do much to prevent fire scale.

Since the pieces will need to be pickled anyway, I don't worry much about using extra flux on base metals when using paste solder.

I always use flux on sterling silver and gold-filled items, but not always on Argentium, which doesn't develop fire scale the same way.

Regardless of the metal, I'm more likely to use flux on larger pieces.

Why? Because larger pieces require longer heating times.

The longer the metal is heated, the hotter it gets, and the thicker the fire scale layer can become which could damage or destroy carefully applied textures.

Materials

No materials listed

Tools

Daddy Dipper Pickle Pot, 24 Ounce Capacity
CLN-585.00
  • CLN-585.00
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $45.95
  • Gold Club Price: $34.46
Add to Bag
NATURE'S TOUCH CITRIC PICKLE, 2LB PLASTIC JAR
CLN-163.00
  • CLN-163.00
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $17.95
  • Gold Club Price: $13.46
Out of Stock
Sparex Number 2 Pickling Compound
SOL-802.10
  • SOL-802.10
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $7.95
  • Gold Club Price: $5.96
Add to Bag
Large Bench Brush
BRS-969.10
  • BRS-969.10
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $8.95
  • Gold Club Price: $6.71
Add to Bag
Small Brass Brush
BRS-966.10
  • BRS-966.10
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $10.97
  • Gold Club Price: $8.23
Add to Bag
Steel Brush
BRS-967.00
  • BRS-967.00
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $8.25
  • Gold Club Price: $6.19
Add to Bag
Basic Soldering Kit
G15-4
  • G15-4
  • Lesson Quantity: 1.00 pieces
  • Purchase Quantity: 1.00 each
  • Price: $58.95
  • Gold Club Price: $44.21
Add to Bag
Add All Items to Cart
  • Category: Metalwork
  • Technique(s): General Education