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Pot Metal Repair



These pics come from a new aerospace test facility that they are constructing at the University of Notre Dame. The SSF-6 is working great.


welding stainless steel

I am attempting to make all of these fittings air tight as they are used for pressure measurements. We can¹t have any leaks. I had very little warpage of my base metal and I think this is really going to work out very well.


silver solder high strength metal repair

Thank you,


David Hipskind
Turbomachinery Technician
The University of Notre Dame
Institute for Flow Physics and Control (FLOWPAC)
The Hessert Laboratory for Aerospace Research


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Inexpensive casting alloys or pot metal can be difficult to work on because of their low melting point. Whether you're soldering pot metal for a repair job, or restoring original pot metal classic car parts, you can work on the alloy with ease and prevent it from pitting or breaking easily when you use quality rods from Muggy Weld.


Other rods melt at 700º and can be dangerously close to melting the metal before you even apply them. On the other hand, Super Alloy 1 from Muggy Weld has a melting point of 350º and unique properties that make pot metal restoration and repairs easier than ever before. To help you prevent damaging the base metal, the non-corrosive flux acts as a temperature guide turns root beer brown when the base metal reaches 350º. As the rod and flux work synergistically, Super Alloy 1 helps you make repairs that are as strong your base metal.


  Super Alloy 1
Melting temperature 350 Degrees
Bonding strength 20,000 PSI
Sizes available 3/32", 1/8"
Flux Honey liquid
Alloy color Silver
Contains cadmium? Yes
Recommended torch Propane, MAPP, butane, oxyacetylene
Metal warpage No
Can bond thick to thin metals? Good
Can join copper, brass, and bronze to other metals Yes
All position? Yes
Can be plated? Most metals except aluminum
Can be polished? Yes
Takes powder coating? Yes
Pre-cleaning necessary? Yes, with a wire brush, sanding, Dremel etc


For a top quality rod, trust only Super Alloy 1 from Muggy Weld. It can join pot metal, zinc, die cast, lead, aluminum, and other white metals to bronze, steel, copper, and brass in any combination. For more information on pot metal repair, and to watch instructional videos, click the links below :

Pot Metal Videos

Video: How to Repair White Metal with Super Alloy 1

Video: How to Repair White Metal with Super Alloy 1New!

An ornamental white metal piece is repaired at 350 degrees

How to Repair Pot Metal, for Beginners

How to Repair Pot Metal, for BeginnersNew!

A first time welder uses Super Alloy 1 and a propane torch to repair white metal/pot metal

Monkey Metal Rrepair Tips

Monkey Metal Repair TipsNew!

Super Alloy 1 is a low temperature multi-metal solder so versatile, it works with nearly any torch.

How to Repair Classic Car Parts

How to Repair Classic Car Parts 

A rare 1934 Chrysler CX Airflow Town Sedan Art Deco side skirt emblem is repaired with Super Alloy 1.

How to Join Broken Pot Metal Parts

How to Join Broken Pot Metal Parts

Super Alloy 1 is an ideal solution for repairing and joining broken pot metal pieces. In this video demonstration, a pot metal tail light bezel has been broken in two pieces, and is joined with Super Alloy 1, a propane torch, and Cool Blue Heat Paste.

Repairing Oxidation on Pot Metal Parts

Repairing Oxidation on Pot Metal Parts

Pot metal "pitting" is a common problem for classic car owners.  Super Alloy 1 provides a permanent solution for pot metal pitting.

Pot Metal Belt Buckle Repair

Bob Mulliman, a MuggyWeld.com customer, traveled 200 miles to attend an antique car show, hoping to restore his irreplaceable 1940 Ford belt buckles.  After speaking to Mike at MuggyWeld.com, Bob  easily made this "impossible" repair with Super Alloy 1 and a propane torch.

1965 Datsun NL320 Repair

Rare 1965 Datsun NL320 tail light bezels are repaired with Super Alloy 1 and a propane torch.   Only 1000 of these trucks were manufactured, so finding replacement parts was not difficult--it was impossible.

How to Solder Classic Car Parts with Super Alloy 1 

This antique Buick grille had both a hole and a break in the pot metal and was in need of restoration.  After using a sanding disc to clean contaminates and oxidation from the work surface, Super Alloy 1 rod and flux were used to for both repairs. 

Brazing Zinc with Super Alloy 1 350°F Solder 

Step-by-step instructional video demonstrating how to repair zinc parts with Super Alloy 1 multi-metal solder and flux.

How to Solder Zinc at 350°F, with Super Alloy 1 and a propane torch 

Super Alloy 1 multi-metal solder is utilized to fill a gap between two zinc plates.

Pot Metal Pit Repair with Super Alloy 1 and a Propane Torch

Pitted pot metal or zinc die cast parts are very prevalent when it comes to this white metal.

How to repair cracks in pot metal or zinc die cast at low heat.

How to repair pot metal with a crack or cut at low heat with MuggyWeld.com Super Alloy 1 multi-metal solder.  Although zinc has a low melting temperature of 786°F, Super Alloy 1 rod and flux flow at 350°F, enabling even the novice welder to successfully repair zinc with a propane torch.

How to Fix Broken Pot Metal with a Propane Torch.

Repair a broken pot metal or zinc die cast table leg using Super Alloy 1 and a propane torch.

How to Solder a Steel Screw to Pot Metal Using Super Alloy 1 and a Torch.

Solder steel to pot metal at 350 degrees using a propane torch and Super Alloy 1 rod and flux.

Pot Metal Repair on classic car parts and antique zinc diecast

A montage of pot metal parts repaired with Super Alloy 1 low temperature solder.

How To Repair Zinc, Pewter or Pot Metal Jewelry without damaging the piece.

Super Alloy 1 solder is used to bridge the gap of a broken antique jewelry piece.

Zinc Die Cast Carburetor Repaired with Muggyweld Super Alloy 1 Rod and Flux.

We repaired a cut in a pot metal carburetor with a propane torch and Super Alloy 1. We heated the part before adding the flux, then added the rod. The metal cooled slightly before using a wire brush and water to remove the flux residue. To smooth the solder, we used a dremel tool to grind to a finish.

Antique Zinc Die Cast Jewelry Box Handle Repair

Zinc Die Cast Handle off an Antique Jewelry Box Repaired with Super Alloy 1 rod and flux.

Repairing a Pot Metal Bell Boy Boat Emblem

A customer at a local car show brought this broken pot metal Bell Boy emblem to Muggy Weld for repair. Mike Muggy used a file to grind off the chrome plating on the back of the part, made the repair with Super Alloy 1 and a propane torch, and removed the flux.Super Alloy 1 worked great and the customer can now re-plate his emblem or paint as needed.

Pot Metal Headlight Trim Repair

This headlight trim has a 2 1/2 inch cut in the pot metal. We make the repair with Super Alloy 1, grind the trim down, and show the after shot--front and back--to demonstrate the penetration capabilities.

Classic Car Pot Metal Repair

This pot metal door handle has a piece broken in the middle of the handle. Since we did not have the missing piece, we placed wood behind the part and filled the gap with Super Alloy 1. We used oxyacetylene with a low flame, but a propane torch would work just as well.