Interior recoating is typically limited to small touch-ups rather than full repaints. For minor chips or scuffs:

1. Unplug and let the cavity cool completely.
2. Clean the spot with mild soap; dry fully.
3. Lightly sand flaking edges or surface rust; wipe off dust.
4. Using a brush-on microwave cavity touch-up paint, apply thin coats to bare metal only.
5. Keep paint off the door gasket, vents, hinges, turntable parts, and the waveguide cover.
6. Allow the recommended dry and cure time before using the appliance.

If the damage covers a large area, shows pitting or holes, or you notice sparking, pause use and consult the appliance manufacturer or a professional. Following the product label and your microwave’s manual can help you decide whether a touch-up is appropriate.

Addressing rust depends on how advanced it is. For light, localized rust inside the cavity:

1. Unplug the unit and remove loose paint with fine sandpaper.
2. Clean and dry the area thoroughly.
3. Apply a microwave cavity touch-up paint designed for interior use, building up in thin coats.
4. Let it cure as directed before heating food.

Skip DIY fixes if rust is widespread, deeply pitted, near the door seal, or has created holes. In those cases, discontinuing use and contacting the manufacturer or a qualified service provider is advisable. Using products formulated for microwave interiors, rather than general-purpose paints, can help protect the surface, but results vary based on condition and care.

You can refresh the exterior with appliance paint made for metal and plastic surfaces. Here’s a general approach:

1. Unplug and move the unit to a well-ventilated area.
2. Mask the door glass, controls, vents, and any labels; don’t paint the interior.
3. Clean and lightly scuff the exterior so paint adheres.
4. Apply light coats of appliance enamel or epoxy spray, following the can’s directions.
5. Allow the full cure time before handling or plugging back in.

Only refinish the outside panels. Avoid coating hinges, latches, vents, and seals. Checking your appliance manual and the paint label for compatibility and prep guidance can help you decide if a DIY refinish fits your situation.

You can find microwave paints at Walmart online and in select stores. Try searching these categories:

• Microwave cavity touch-up paint: Brush-on bottles or pens for small interior chips.
• Appliance touch-up paint: For minor exterior dings and scratches.
• Appliance spray paint: Epoxy/enamel sprays for exterior panels.

Filter by color, finish, and where it’s designed to be used (interior vs. exterior). Product pages outline prep steps and dry times so you can plan your project. You can choose delivery or free store pickup at checkout, depending on availability. If you’re unsure which type suits your repair, reviewing your microwave’s manual and the product’s instructions is a good starting point.

Choose the format based on the repair and location:

• Interior chips/scratches: Use a brush-on bottle or touch-up pen. They’re made for precise application and small spots.
• Exterior panels: Use appliance spray paint for broader, even coverage on the outside only.
• Tiny marks or hairline scratches: Pens offer the most control.
• Dime- to quarter-size areas: Brush-on bottles work well for building thin coats.

Always confirm the product is intended for your use (interior vs. exterior), prep the surface well, and follow label cure times. Results can vary based on condition and technique, so starting with the smallest practical repair format can help you gauge fit and finish before committing to larger areas.