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How to Repaint a Heavily Rusted Appliance

Tutoriel vidéo
Ce tutoriel a été transcrit à partir d'une vidéo YouTube.

Introduction

Use this guide to refinish a heavily rusted appliance door so it looks clean and uniform again. The same sanding, priming, and spray-paint technique works well for many refrigerators, freezers, washers, and dryers, especially when rust spots, pitting, and old paint are making the surface look rough or stained.

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  1. Modifier

    • Unplug the appliance before starting any disassembly or sanding.

    • Work in a well-ventilated area because spray paint fumes contain VOCs.

    • Wear eye protection, a paint-rated respirator, and gloves while sanding, cleaning, and painting.

    • Keep solvents and paint away from flames, sparks, and hot surfaces.

  2. Modifier

    • Remove the top hinge screws to free the door.

    • Lift the door off the appliance and move it to a flat, open work area.

    • Set the door on two sawhorses so you can sand and spray evenly across the whole surface.

    • Door and hinge designs vary, so take photos as you go to help with reassembly.

  3. Modifier

    • Plan to use multiple sandpaper grits because one grit usually can’t handle heavy rust and still leave a smooth finish.

    • Start with a very rough grit when rust is heavy, pitted, or uneven.

    • Use 60-grit sandpaper for heavy rust, or drop to 40- or 50-grit if it’s extremely bad.

    • Move up to around 150-grit sandpaper, then finish with 220-grit sandpaper for a smoother paint-ready surface.

    • An intermediate grit like 80-grit can help bridge the jump between 60-grit and 150-grit when you have it available.

  4. Modifier

    • Remove stickers, tags, and stuck-on residue before sanding.

    • Soak adhesive residue with a sticker remover, then scrape it off with a putty knife.

    • Use a degreaser before sanding if the surface has oil or grease on it.

    • Don’t use soap or water because it can create problems when it interacts with rust and paint.

  5. Modifier

    • Use a random orbital sander to help keep the sanding pattern even.

    • Use a sander with a dust catcher if possible because sanding throws dust everywhere.

    • Sand the door with the lowest-numbered grit you chose, such as 60-grit, to remove rust and high spots quickly.

    • Keep the same speed and tempo across the whole door so the surface stays uniform.

    • Don’t press hard or let the sander sit in one spot because it can cut deeper and leave visible scratches.

    • Cover the face, edges, and sides, and expect the first pass to remove a lot of rust while still leaving some rust spots behind.

  6. Modifier

    • Switch to a higher grit disc, such as 150-grit, for the second pass.

    • Run the sander evenly across the door again to remove more rust and smooth out marks from the coarse grit.

    • Keep the same speed, keep moving, and don’t press down hard.

    • Bare metal showing through in spots is OK because the goal is a smooth, even surface, not necessarily removing all old paint.

  7. Modifier

    • Switch to 220-grit sandpaper for the final sanding pass.

    • Sand the face, edges, and sides until the surface feels smooth and looks even.

    • Expect a lot of sanding dust, especially if the sander doesn’t have a dust catcher.

    • Run a box fan with a HEPA filter or another filtration method to reduce airborne dust if you can.

  8. Modifier

    • Wipe the sanded surface with mineral spirits on a rag or paper towel to remove sanding dust and residue.

    • Avoid acetone on this kind of job because it has harsh fumes and can damage plastic and rubber parts.

    • Start painting shortly after cleaning so new dust doesn’t settle onto the surface.

    • Mask off gaskets, plastic liners, and any areas that shouldn’t get paint using masking tape.

    • Keep the door on sawhorses with a tarp underneath so you can spray at a consistent height and angle.

  9. Modifier

    • Spray a rust-inhibiting primer over rust-stained areas so the rust is less likely to bleed through the final paint.

    • Read the can instructions carefully, including recoat timing.

    • Shake the primer can for at least one minute, and up to two minutes, based on the can directions.

    • Start spraying off the workpiece, sweep across the door, and stop spraying after you pass the far edge.

    • Apply a second primer coat only within the allowed window, such as 30 minutes to one hour or after 48 hours, but not in between.

    • Wear a mask and keep ventilation running while spraying.

  10. Modifier

    • Hold the spray can about 10 inches above the surface while applying appliance epoxy spray paint.

    • Keep the can level and avoid arcing your wrist so the spray distance stays consistent across the whole door.

    • Apply light, even coats using the same start-off, sweep-through, and stop-off technique used for primer.

    • If the paint starts spraying dots or blobs, check that your finger isn’t pushing the nozzle at an angle or blocking the spray.

    • Use a spray can trigger handle to keep the nozzle press straight and reduce splatters.

    • Replace a defective can if it won’t spray cleanly, and don’t mix different paint can types on the same door.

  11. Modifier

    • Sand the painted surface with 220-grit sandpaper to remove raised blobs, droplets, and cracking patterns.

    • Hand sand any spider-webbed areas a bit more if they still feel rough after machine sanding.

    • An extra pass with 150-grit sandpaper can help even out severe areas before finishing again with 220-grit.

    • Lightly sand localized defects using a high-grit sanding attachment on a rotary tool when needed.

    • Wipe the door again with mineral spirits to remove dust before spraying more paint.

    • Follow the paint can’s recoat window because some appliance epoxy paints require recoating within one hour or waiting a full week.

    • Avoid piling on too many coats without sanding between because excess paint can contribute to cracking and texture issues as it dries.

  12. Modifier

    • Spray a general light coat over the entire door after sanding and cleaning.

    • Wait the required 45 minutes, then apply an extra light coat to any remaining problem area if needed.

    • Let the paint dry for four to six hours.

    • Remove the masking tape from the gaskets and edges.

    • Reinstall the door and secure the hinge screws.

  13. Modifier

    • Don’t use paint stripper or acetone on rubber or plastic because it can melt or damage those materials.

    • Soak a paper towel with rubbing alcohol, such as 91% isopropyl alcohol, and scrub off overspray with a little elbow grease.

    • Apply the alcohol to the towel rather than spraying it directly onto the door.

    • Use caution if you rub overspray on painted metal because aggressive scrubbing can remove fresh paint.

Conclusion

For best results, keep the door clean and dust-free while it dries, and follow the paint can’s full cure time before heavy use or washing. Save leftover paint and note the exact products used so touch-ups match later.

Auteur

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Ben Schlichter

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