Sanding Acrylic Sheets: Clear, Smooth, and Polished Results

Acrylic sheets (often called plexiglass or Perspex) are popular for DIY projects, displays, and crafts. However, cutting or drilling them can leave rough, cloudy, or scratched edges. Sanding is the key to restoring clarity and creating polished, professional-looking acrylic surfaces. This guide shows you the right grit sequence and techniques.

Why Sand Acrylic Sheets?

Sanding removes saw marks, rough edges, and scratches while preparing the surface for polishing. Without sanding, acrylic remains cloudy and prone to cracking along rough edges.

Tools You’ll Need

• Wet/dry sandpaper sheets (400–3000 grit)
• Sanding block or sponge
• Spray bottle with water
• Microfiber cloths
• Plastic polishing compound
• Protective gloves and goggles

Recommended Grit Sequence

• 400 grit: Remove saw marks and rough edges.
• 800 grit: Smooth the surface after coarse sanding.
• 1500 grit: Refine scratches for a semi-clear finish.
• 3000 grit: Achieve crystal-clear transparency.

Step-by-Step: Sanding Acrylic Sheets

1. Clean the sheet. Wash with mild soap and water, then dry completely.
2. Start with 400 grit. Use 400 grit (25-pack) wet/dry sheets to remove saw or cut marks.
3. Smooth with 800 grit. Switch to 800 grit (50-pack) for even refinement.
4. Refine with 1500 grit. Use 1500 grit (100-pack) to prepare for clarity.
5. Finish with 3000 grit. Wet sand until edges become transparent and polished.
6. Buff with polishing compound. Apply compound and wipe with microfiber cloth for glass-like results.

Special Cases

For thicker sheets, sanding may take longer—keep the surface wet to prevent heat damage. For curved acrylic, use flexible foam-backed sandpaper to maintain even pressure.

Pro Tips

• Always wet sand to prevent acrylic from melting.
• Sand in small circular motions for even results.
• Switch sanding directions between grits to track progress.

Aftercare

• Apply a plastic polish periodically to maintain clarity.
• Avoid harsh cleaners that can scratch or haze acrylic.
• Store sheets flat to prevent bending or cracking.

FAQs

• Can I use a power sander? Yes, but keep speed low and always wet sand to avoid melting.
• Why does my acrylic still look cloudy? Keep sanding through finer grits up to 3000, then polish.
• Is dry sanding possible? Not recommended—acrylic overheats and scratches easily.

Watch & Learn

Sanding acrylic sheets restores smoothness and clarity for professional-looking results. Stock up on wet/dry sandpaper sheets—packs of 25, 50, and 100 available in all fine grits. Shop acrylic sanding sheets here.