120 Grit Sanding Discs: The Perfect Balance for Smoothing and Prep Work

120 grit sanding discs strike the ideal balance between removing material and leaving a surface smooth enough for the next stage. Found in the 5-Inch 8-Hole Sanding Discs, Hook & Loop, Assorted Grit (50-Pack), they are perfect for refining wood, prepping metal, or smoothing filler before finer sanding.

Why 120 Grit is a Key Step

After starting with a coarse grit like 80, 120 grit removes deep scratches and levels the surface while still offering enough bite for primer, paint, or stain to adhere well. Skipping this step can leave visible marks in the finished product.

Best Uses for 120 Grit

• Wood Refinement: Smooths rough boards or furniture after coarse sanding.
• Paint Prep: Ideal for bare wood or lightly painted surfaces before coating.
• Metal Smoothing: Removes light oxidation or tool marks.
• Filler Leveling: Evens out wood filler or body filler without tearing.

Tools & Setup

• 120 Grit Sanding Disc from the 50-Pack
• Random orbital sander
• Dust collection or vacuum system
• Safety gear: dust mask and eye protection

Step-by-Step: Using 120 Grit

1. Prep the Surface: Remove heavy damage or coatings with 80 grit first.
2. Attach the Disc: Align the 8 holes with your sander pad for dust extraction.
3. Sand Evenly: Use light to moderate pressure and steady motion.
4. Cover All Areas: Overlap passes slightly for consistent results.
5. Inspect and Advance: Once scratches from 80 grit are gone, move on to 180 grit for finer work.

Pro Tips

• Always sand with the grain on wood to minimize scratches.
• Use fresh discs for large projects to maintain consistent cutting power.
• Vacuum or wipe between grit changes to prevent cross-contamination.

Common Mistakes

• Skipping 120 Grit: Leaves coarse marks that are hard to remove later.
• Over-Sanding: Can create low spots, especially on veneers.
• Starting Too Fine: 120 grit isn’t coarse enough for major stock removal.

FAQs

• Is 120 grit good for final sanding? No, follow with finer grits like 180 or 220 for finish prep.
• Can I use it on plastic? Yes, but apply light pressure to avoid melting.
• Will it work for wet sanding? Only if the discs are rated for wet/dry use.

Watch 120 Grit in Action

For a smooth transition from coarse sanding to finish prep, make 120 grit part of your workflow. The 5-Inch 8-Hole Sanding Discs (50-Pack) give you the precision and performance needed for professional results.