Film Master Sanding Disc
Application
Surface Preparation and Finishing of Paint, Wood, Stone, Metal, and Electronic (3C) Materials. Especially for Automotive Paint Repair, Including Body Filler Sanding and Primer Surfacer Sanding During the Spray Painting Process.
Grit Options
- Regular: P80, P120, P180, P240, P320, P400, P500, P600
- Custom: P60, P150, P220, P280, P360, P800, P1500, P2000
Size Options
- Regular: 6"
- Custom: 3" 5"
Hole Options
- Regular: 17 Holes, 48 Holes
- Custom: 6 Holes, 7 Holes, 9 Holes, 15 Holes
Technical details
Product Features
Ceramic Hybrid Abrasive Material – Stronger Cutting Power
Engineered with a premium ceramic hybrid abrasive material, the grinding disc delivers significantly enhanced cutting performance.
Compared with conventional abrasives, it offers up to 2× faster cutting speed and a much longer service life.
Polyester Film Backing Material – Tear-Resistant & Long-Lasting
Durable polyester film backing gives film discs a flatter, more stable surface than traditional paper-backed sandpaper, ideal for wet & dry sanding.
Anti-Clogging Super Coating – Reduced Loading
High-performance anti-loading surface prevents dust buildup and abrasive loss, enhancing durability and extending service life.
Electrostatic Grain Coating – Faster Cutting with Less Effort
Utilizing advanced electrostatic grain orientation, the sanding disc provides a sharper, more uniform abrasive surface.
It is ideal for heavy-duty tasks such as weld grinding, beveling, and contouring on curved surfaces.
Hook and Loop Backing – Quick Change Discs
Designed with a premium hook and loop backing, the sanding disc attaches securely while allowing fast and easy replacement, significantly improving work efficiency.
Downloads
F&Q
Why can film sanding discs still leave deep scratches or random swirl marks?
Even with film-backed sanding discs, obvious deep scratches, random swirl marks, or sanding lines that are hard to remove later usually mean the sanding sequence or operating method still needs adjustment.
Common causes:
• Scratches from the previous grit step were not fully removed before moving to a finer grade.
• The backup pad is too hard or the contact surface is uneven, creating excessive local pressure.
• The disc is already dull or loaded, but sanding continues with heavy force.
• Curves and edges are sanded without an interface pad or soft backing, which makes random deep marks more likely.
How to improve the finish:
• Make sure each grit step has removed the previous scratch pattern evenly before moving on.
• Match pad hardness to the shape of the workpiece, and use an interface pad on complex curves whenever possible.
• Let the disc cut instead of forcing it with pressure, and replace it once heat builds up or cutting slows down.
• Keep the surface clean before and during sanding so coarse residue is not dragged back across the finish.
What abrasive backing materials are commonly used in automotive sanding, and how should you choose among them?
What are the common abrasive backing materials?
The most common backing materials are listed below:
Paper Backing
• Cost-effective and widely used
• Suitable for routine dry sanding and lighter-duty applications
• Stability may drop under heat, humidity, and long continuous use
Cloth Backing
• Better flexibility and tear resistance
• Often used for heavier cutting or jobs requiring bending
• Usually higher cost than paper backing
Film Backing
• More uniform thickness and higher dimensional stability
• Less edge curl and deformation in continuous sanding
• Common in automotive fine sanding and pre-paint finishing
Sponge Backing
• Better conformity on curves
• Useful for edges, contours, and manual detail work
Mesh Backing
• Strong anti-clogging performance with dust extraction
• Suitable for dusty and clog-prone conditions