Large Flat Lap Discs

Large Flat Lap Discs – 10" to 24" Diamond Discs for Production Flat Lapping

Professional large format flat lap discs for production lapidary grinding, industrial flat lapping, and high-volume gemstone processing. Available in 10" to 24" diameters with metal bond and resin bond options — designed for production flat lap machines handling large slabs, multiple stones, and continuous grinding operations.

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Disc Specifications

Diameter Type Application Notes
10" (250mm) Metal / Resin Bond Semi-pro flat lap, larger stone processing Bridges hobby and production use
14" (350mm) Metal / Resin Bond Production flat lap, slab grinding High-volume lapidary processing
18" (450mm) Metal Bond / Sintered Industrial flat lapping, large slabs Heavy-duty production use
24" (600mm) Sintered / Industrial Large format industrial flat lapping Maximum production capacity

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Frequently Asked Questions

  • Q: What machines use large flat lap discs?
    A: Large flat lap discs are used on production flat lap machines, industrial lapping machines, and large-format lapidary grinders. They are not compatible with standard 6"–8" hobby flat lap machines.
  • Q: What grit should I use for production flat lapping?
    A: Production flat lapping typically starts with 60–120 grit metal bond for stock removal, progresses through 260–600 grit for fine grinding, and finishes with 1200–3000 grit resin bond for pre-polish.
  • Q: Do large flat lap discs require special mounting hardware?
    A: Yes — large discs require a compatible machine arbor and mounting flange. Verify disc bore size and machine arbor specifications before ordering.
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