How to Use Wet/Dry Polishing Papers to match abrasive type to material

Use Wet/Dry Polishing Papers to match abrasive type to material works best when you treat abrasives as a workflow: remove defects, then refine scratches step-by-step. This guide shows a practical way to match abrasive type to material and keep results consistent.

Why Sanding Matters

Abrasion is controlled scratch management. Consistent grit steps remove the previous grit’s scratches efficiently and reduce surprise deep marks that show up later in finishing.

Tools

• Raking light (flashlight held low to reveal scratches)
• Proper backing/block (keeps pressure even)
• Vacuum/brush + microfiber cloths for cleanup
• Spray bottle (for wet sanding where appropriate)
• Painter’s tape (protect edges/adjacent surfaces)

Recommended Grit Sequence

• 80 grit – Start here for faster defect removal
• 120 grit – Refine and remove coarse scratches
• 220 grit – Smooth and prep for finishing
• 320 grit – Final refinement before coating/polish

Step-by-Step

1. Set the end goal. Decide whether you need defect removal, coating prep, or polishing prep.
2. Choose a starting grit that removes the problem. Use 80 Grit (25 Pack) and work until the scratch pattern is uniform.
3. Clean and inspect. Dust hides scratches—wipe clean and check under raking light.
4. Move up and erase the previous scratches. Switch to 120 Grit (25 Pack) with lighter pressure.
5. Finish with a consistent final grit. Use 220 Grit (25 Pack) to set the surface profile for the next stage.
6. Final cleanup. Vacuum and wipe so you don’t trap residue under coatings.

Special Cases

Don’t skip steps. Skipping grits often leaves scratches that show up later.

Replace abrasives early. Loaded media causes random deep scratches and slower cutting.

Pro Tips

• Reduce pressure as you go finer. Fine grits work best with light pressure.
• Use raking light often. It reveals swirls and low spots fast.
• Keep final grit consistent. Mixed final grits can create uneven sheen/adhesion.
• Change abrasive when it stops cutting. Dull media wastes time and can burnish surfaces.

Aftercare

• Clean surfaces thoroughly before coating or polishing.
• Let wet-sanded parts dry fully before paint/clear coats.
• Store sheets flat and dry.
• Keep core grits ready for complete progressions.

FAQs

• How do I know when to move up? When the scratch pattern is uniform and deeper lines are gone.
• Can I jump grits? You can, but it often takes longer and gives less consistent results.
• When should I wet sand? Often on finer grits and on finishes to reduce loading and dust.
• Why do scratches show later? Usually the previous grit wasn’t fully removed or you moved up too soon.

Watch & Learn

To apply the same workflow you just watched, keep a few reliable grits ready and move up step-by-step. A practical set to start with: 80 Grit (25 Pack), 120 Grit (25 Pack), 220 Grit (25 Pack).

When your scratch pattern is uniform and the surface feels consistent, finishing becomes far more predictable. The simplest rule is still the best one: don’t skip grit steps.