Cold Welding Mixture Moje Auto 4 min 56 g (model 20-A40) — fast-setting metal repair putty

Moje Auto cold welding mixture 4 min 56 g (model 20-A40) is a two-component metal repair putty designed for fast-setting, durable repairs where thermal welding is impractical. The product consists of a base compound and a hardener that, when mixed, provide a working time of approximately four minutes and cure to a solid, machinable and sandable finish. It is intended for use on steel, cast iron and certain metal alloys to seal leaks, rebuild worn surfaces, fill holes and cracks, and restore housings, pipes and threaded connections.

Advantages

This cold welding mixture sets quickly, allowing rapid repair work without the need for heat or welding equipment. Once cured it offers good adhesion to ferrous metals and a machinable surface that can be drilled, tapped, ground or sanded to shape. The compact 56 g pack is suitable for small to medium repairs and convenient for workshop or mobile use. The two-component formulation ensures a reliable chemical cure and mechanical strength appropriate for many automotive and industrial applications.

Suitable for

• Sealing small leaks in housings, radiators or pipes (non-high pressure applications)
• Rebuilding and filling worn threads, bolt holes and stripped fastener seats
• Repairing cracks, holes and surface damage on steel and cast iron parts
• Making profile restorations and small structural improvements before machining
• Temporary or semi-permanent repairs when welding is impractical or unsafe

Key specifications

• Two-component epoxy/metal putty formulation
• Working time: approximately 4 minutes after mixing
• Net mass: 56 g
• Cures to a solid, machinable and sandable consistency
• Suitable substrates: steel, cast iron and certain metal alloys
• Application temperature range: normal workshop temperatures (refer to label for exact limits)

How to use

Prepare the damaged area by cleaning off oil, grease, rust and loose material; roughen smooth surfaces to improve adhesion. Cut or proportion the two components as supplied and mix thoroughly until a uniform colour and consistency is achieved. Apply the mixed putty to the repair area, shaping and pressing it into cracks or cavities. Allow the material to cure undisturbed for the time indicated on the product packaging; once fully cured it can be machined, ground or sanded to the required profile. Follow local safety guidance and use gloves and eye protection during preparation and application.

Usage recommendations

Use this cold welding putty for small to medium metal repairs where heat-based welding is unsuitable; avoid using it on surfaces that will be exposed to continuous high pressure, very high temperatures, or where electrical conductivity is critical unless verified by the manufacturer. Store unopened product in a cool, dry place and discard mixed material after the working time has elapsed.