How to Sand Truck Fender to restore clarity

Truck Fender work like “restore clarity” is all about controlled leveling and a clean grit progression. With wet sanding, you’re not forcing material off—you’re refining the surface step-by-step so the finish can polish back evenly.

Why Sanding Matters

When you’re working on truck fender, the biggest mistakes are skipping grits and sanding dry too aggressively. A steady progression (1200 → 1500 → 2000 → 3000) keeps scratches shallow and consistent, which is what makes clarity and gloss return after polishing.

Tools

• Bucket of clean water + spray bottle (for wet sanding)
• Sanding block (soft interface pad helps on curves)
• Microfiber towels (several)
• Masking tape (protect edges and trim)
• Soap (a few drops in water for lubrication)
• Good lighting (flashlight or inspection light)

Recommended Grit Sequence

• 1200 grit – Cut/level the defect (orange peel, edge, or scratches) with control
• 1500 grit – Refine the previous scratches and even out the surface
• 2000 grit – Pre-polish refinement for a clearer finish
• 3000 grit – Final sanding step before compound/polish (or to stop at a uniform haze)

Step-by-Step

1. Wash and decontaminate the truck fender. Dirt is what causes deep random scratches. Clean first, then dry.
2. Mask edges and nearby trim. Sharp edges burn through faster; tape them so you don’t thin the finish.
3. Start wet sanding with 1200 grit. Keep the surface wet, use light pressure, and sand in short, even passes. Stop often to wipe and check your progress.
4. Switch to 1500 grit and change direction. A 90° crosshatch makes it easy to see when the 1200 scratches are fully removed.
5. Refine with 2000 grit. Use longer strokes and lighter pressure; you’re chasing uniform haze, not more material removal.
6. Finish with 3000 grit. This step reduces compounding time and helps the surface polish back to clarity more predictably.
7. Rinse, dry, and inspect under strong light. If you still see deeper lines, step back one grit and re-refine before polishing.

Special Cases

Plastics vs paint: if you’re sanding a painted fender, keep it wet and use light pressure. If it’s bare plastic, test a small spot first for heat sensitivity.

Pro Tips

• Use lubrication. A few drops of soap in water helps the paper glide and reduces random scratches.
• Change direction between grits. It’s the fastest way to confirm you removed the previous scratch pattern.
• Don’t chase perfection with the first grit. Level the defect, then let the next grits do the refining.
• Keep the paper clean. Rinse the sheet often; a single grit particle can carve a deep line.
• Wet or dry use. These silicon carbide sheets work wet or dry, but wet sanding is usually safer for paint and clear coat.

Aftercare

• Rinse thoroughly to remove slurry, then dry with a clean microfiber.
• Polish with compound and finishing polish to restore full clarity and gloss.
• Apply protection (wax/sealant/ceramic) after polishing and final wipe-down.
• Avoid harsh washing for 24 hours after heavy polishing if you used fresh protection.

FAQs

• Do I have to wet sand? For paint/clear coat and lenses, wet sanding is usually safer and more consistent.
• How do I know when to move up a grit? When the previous grit’s scratches are gone and the haze is uniform.
• Why does it look worse before it looks better? Sanding creates an even haze; polishing removes that haze and brings back clarity.
• Can I jump from 1200 straight to 3000? It often leaves deeper scratches that are harder to polish out—use the full progression.
• What if I still see deeper scratches after 3000? Step back one grit and re-refine; don’t try to “polish out” deep sanding marks.

Watch & Learn

If you want the same predictable results you just watched, keep the core wet-sanding steps simple: level with 1200 Grit (100 Pack), refine with 1500 Grit (25 Pack), and prep for polishing with 2000 Grit (25 Pack). That three-step approach covers most paint and lens finishing jobs without overcomplicating the process.

Once the surface is uniformly refined, polishing becomes faster and the finish comes back clearer. Pick the grits that match your goal and keep your progression consistent from start to finish.