Silicon Carbide Lapping Film Discs

Silicon Carbide Lapping Film Discs – Aggressive SiC Abrasive Film for Precision Grinding

Our 6" Silicon Carbide Lapping Film Discs provide aggressive, fast-cutting abrasive action for precision grinding and surface preparation on stone, glass, metal, and ceramics. Silicon carbide is one of the hardest synthetic abrasives available — cutting faster and more aggressively than aluminium oxide at equivalent grit levels, making SiC lapping film the preferred choice for coarser lapping stages and harder materials before transitioning to finer aluminium oxide or cerium oxide finishing films.

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Specifications

Specification Detail
Diameter 6"
Abrasive Silicon carbide (SiC)
Backing Flexible polyester film
Cutting action Aggressive — faster cutting than aluminium oxide
Applications Stone, glass, metal, ceramics

Applications

  • Coarse lapping — Initial surface preparation and stock removal on hard materials
  • Metal surface finishing — Precision grinding on tool steel, carbide, and hard alloys
  • Stone grinding — Flat lap surface preparation on lapidary stone slabs
  • Glass grinding — Coarse to medium surface preparation before fine polishing films
  • Ceramic lapping — Technical ceramic surface finishing and flatness preparation

Lapping Film Sequence

Stage Film Type Purpose
1. Coarse Silicon Carbide Film Aggressive stock removal, initial surface preparation
2. Medium Silicon Carbide or Diamond Film Scratch removal, surface smoothing
3. Fine Aluminium Oxide or Diamond Film Pre-polish surface preparation
4. Final Polish Cerium Oxide Film Mirror-quality final polish on glass and soft stone

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Frequently Asked Questions

  • Q: When should I use silicon carbide lapping film vs. aluminium oxide film?
    A: Use silicon carbide film for coarser lapping stages and harder materials where faster, more aggressive cutting is needed. Use aluminium oxide film for finer finishing stages and softer materials where a gentler abrasive action produces better surface quality. SiC cuts faster; Al₂O₃ finishes finer.
  • Q: Should silicon carbide lapping film be used wet or dry?
    A: Light wet use is recommended — a few drops of water or light oil on the disc surface lubricates the abrasive, prevents glazing, and extends film life. Avoid flooding with water. For metal lapping, a light cutting oil often produces better results than water.