1953-2019 Bare Metal Rust Treatment – MWorks Metal Etch – 1 Pint
MWorks Metal Etch is a non-toxic, non-flammable, and reusable liquid etch designed for Corvette bare metal. Whether you're restoring OE brackets, prepping replacement panels, or safeguarding freshly sandblasted surfaces, this specially formulated solution chemically etches exposed metal and deposits a zinc phosphate layer that promotes paint adhesion and prevents flash rust for up to six months.
This is a great step to use after using MWorks Rust Remover and essential for Corvette restorers working with steel inner fenders, seat brackets, body mounts, or welded patches. Compatible with all types of bare metal—mild steel, cast iron, or sheet metal—this product gives your primer or topcoat a surface it can grab and lock onto.
Application Versatility
Apply MWorks Metal Etch by brushing, spraying, or dipping. Shake thoroughly before use. For best results, apply to clean, degreased metal surfaces between 70°F and 100°F. Keep surface damp with product for 30+ minutes before drying. Treated parts will develop a uniform gray zinc coating. Topcoat with epoxy or encapsulator for best long-term protection.
Features
• Inhibits rust for up to 6 months on bare metal
• Leaves zinc phosphate coating for paint bonding
• Gently etches mild steel and sheet metal
• Brush, spray, or dip application
• Reusable, non-flammable, and non-toxic
Where to Use on Corvette
• Seat frames, mounting brackets, headlight bucket parts
• Battery trays, radiator supports, inner fenders
• Sandblasted suspension arms or spring mounts
• Firewall panels, cowl structure, rear deck framing
Companion Products
• MWorks Rust Remover – for removing corrosion before etching
• MWorks Encapsulator – for sealing post-etch surfaces
• Acetone or mineral spirits for cleanup
Dimensions and Weight
• Volume: 1 pint (473 mL)
Because Details Matter
Corvette restorers know that surface prep is half the battle. MWorks Metal Etch is your invisible armor—etching and protecting bare metal with a zinc phosphate layer that guards against corrosion and gives your topcoat a fighting chance. Before the paint goes on, let the chemistry do the heavy lifting.
Learn more from the following Mid America Motorworks Knowledge Library article:
Rust Converters and How They Work on ANY Metal Restoration
Also known under these part numbers: (For reference only)
1953-2019 Bare Metal Rust Treatment – MWorks Metal Etch 119176
Quick FAQ
What types of metal does Metal Etch work on?
Metal Etch is effective on ferrous metals, such as steel and iron.
How does Metal Etch work?
Metal Etch contains phosphoric acid, which removes light surface rust as it gently etches bare metal. Simultaneously, it lays down a zinc phosphate coating that inhibits corrosion and promotes primer or paint adhesion.
Should the surface be prepped before application?
Yes. For best results:
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Remove all grease, oil, and surface residue.
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Residual contaminants may interfere with adhesion of subsequent coatings.
Can the product be reused?
Yes. Metal Etch can be reused after the metal part is dipped. Ensure the product is stored properly after use.
Will Metal Etch harm the metal?
No, if used correctly. Metal Etch uses phosphoric acid to etch the surface. If parts are left submerged too long—especially when dipped—it may start to aggressively etch the metal surface. Monitor soak times carefully.
Does temperature affect results?
Yes.
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Optimal application temperature is between 70°F and 100°F.
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Below this range: Reaction slows, risking incomplete treatment.
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Above this range: Solution may evaporate too quickly, limiting effectiveness.
How do I clean up?
Clean excess Metal Etch from metal surfaces using mineral spirits or acetone.
Directions
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Shake well before use.
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Remove all loose rust and dirt using a wire brush, sandpaper, or similar tool. Clean thoroughly with degreaser to remove oil and contaminants.
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Apply Metal Etch directly to the bare metal surface by spraying, brushing, or dipping.
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Allow Metal Etch to dwell on the surface. The etching reaction will begin immediately as it removes light rust and lays down a zinc phosphate coating.
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Monitor the surface during treatment. Do not allow Metal Etch to dry on the surface before rinsing.
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After treating, rinse thoroughly with water and allow the metal to dry completely before applying primer, paint, or additional coatings.
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Metal Etch can be reused if stored properly.
IMPORTANT: If Metal Etch is left on longer than recommended, it may etch the metal too deeply and interfere with future paint adhesion. Keep Metal Etch wet during application. Do not allow Metal Etch to dry on the surface.