Luna OEM Aerosol Undercoat 400ml

Luna Basecoats, Midcoats & Performance series paints come ‘Ready to Spray’.  This means that you just need to mix the paint when you are ready, filter and spray. 

Preparation

• Surface Prep: Clean thoroughly to remove dust, grease and old coatings. Lightly scuff or sand smooth surfaces (P400–P600 grit) to promote adhesion. Wipe with a breathable tack cloth or isopropyl alcohol.
• Primer: If you have exposed metal or need to repair large areas we would suggest using our UHS Primer (Panels should be sanded no higher than P400 grit).
• Environment: Ideal temperature 65–75 °F (18–24 °C). Relative humidity 40–60 %. Spray in a well-ventilated area or booth to avoid overspray buildup.
• Personal Protection: Wear a properly fitting respirator rated for solvent vapors. Use nitrile gloves and safety goggles. Keep working area free of open flames or sparks.

Mix Well

• Mix the OEM Paint well as pigments may have settled during transport.
• Test-spray on a disposable card or scrap piece to check atomization, color and coverage before applying.

Spraying Technique

• Spray 2 x 75% Wet coats for full coverage with a 10-15 minute flash between coats.
• Midcoats, Pearls & Metallics will all need a ‘3rd Coat’ which should be ‘Control or Effect coat’. If you are unsure, please as for the Luna Technical Department when contacting customer service. When spraying these types of paints, take your time and apply even coats. 
• Use smooth, even passes, overlapping each pass by 50 % for uniform coverage.

Drying before Clearcoat

• Flash Between Coats: Allow each coat to fully flash (no longer tacky) before recoating to prevent runs and orange peel.
• After the final coat of color, wait 30 minutes before applying our VHS or Standard Clearcoat

Luna Basecoats, Midcoats & Performance series Aerosols are of course ‘Ready to Spray’.  This means that you just need to shake well before starting the application.

Preparation

• Surface Prep: Clean thoroughly to remove dust, grease and old coatings. Lightly scuff or sand smooth surfaces (P400–P600 grit) to promote adhesion. Wipe with a breathable tack cloth or isopropyl alcohol.
• If you are painting on uneven painted surfaces or bare metal you should consider one of our Primer Aerosols
• Environment: Ideal temperature 65–75 °F (18–24 °C). Relative humidity 40–60 %. Spray in a well-ventilated area or booth to avoid overspray buildup.
• Personal Protection: Wear a properly fitting respirator rated for solvent vapors. Use nitrile gloves and safety goggles. Keep working area free of open flames or sparks.

Shake & Test

• Shake the can vigorously for 45–60 seconds, inverting several times to mix pigments and metallic flakes.
• Test-spray on a disposable card or scrap piece to check atomization, color and coverage before applying to the final part.

Spraying Technique

• Hold the can 5–6 inches (12–15 cm) from the surface, perpendicular to the panel. Do not tilt.
• Use smooth, even passes, overlapping each pass by 50 % for uniform coverage.
• Depress the trigger fully for consistent flow; release fully between passes to avoid drips.
• Move the can at a steady speed

Layering & Coverage

• Solid colors: Apply two coats (~85 % coverage each), letting each flash for 2–3 minutes before the next.
• Pearl / Metallic colors: Apply two coats as above but finish with a lighter 3rd coat double the distance from the item you are spraying to achieve the correct pearl or metallic finish.
• Flash time 5–10 minutes.

Drying before Clearcoat

• Flash Between Coats: Allow each coat to fully flash (no longer tacky) before recoating to prevent runs and orange peel.
• After the final coat of color, wait 30 minutes before applying our 2K Clearcoat Aerosol.

Cleanup & Storage

• Cap Clearing: turn the can upside down and spray until only propellant comes out - his keeps the valve and cap clean.
• Nozzle Care: Remove and clean with solvent (do not soak)
• Storage: Store cans upright in a cool, dry place away from direct sunlight. Avoid freezing or temperatures above 120 °F (49 °C).

1. Thoroughly remove dirt, wax, and surface contaminants using a mild detergent or dedicated car‑wash solution. Rinse and dry completely to ensure optimal adhesion.
   
2. If necessary, lightly sand the damaged spot with fine‑grit (600–800) sandpaper to feather edges and promote paint bonding. Wipe away sanding dust.
   
3. Wipe the area with isopropyl alcohol wipes (or our prep‑solvent pads) to eliminate any remaining oils or residue. Allow to air‑dry.
   
4. Shake your Brush‑Tip Touch‑Up Bottle well, then use the fine bristle tip to deposit a thin, even coat of color into the scratch. Let it level out. Apply as many as you need to achieve full coverage.
   
5. After the paint has cured (15–20 minutes), apply 2–3 light layers of clearcoat with the Clearcoat Pen. Wait 5 minutes between coats for optimal clarity and protection.
   
6. Allow the repair to dry for a minimum of 60 minutes in direct sunlight to cure. Fully cured in 48hrs.