Flat Lap Discs

Flat Lap Discs – Diamond Discs for Flat Lap Grinding & Polishing

Professional flat lap discs for lapidary flat grinding, faceting, and cabochon finishing on flat lap machines. Available in metal bond (coarse grinding), resin bond (pre-polish), and magnetic quick-change systems — covering every stage from initial stock removal to final pre-polish on agate, jasper, quartz, and gemstone materials.

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Disc Types

Type Grit Stage Notes
Metal Bond Disc 60 / 80 / 120 Coarse grinding Initial stock removal and shaping on flat lap
Resin Bond Disc 600 / 1200 / 3000 Pre-polish / fine grinding Smooth surface finish before final polish
Magnetic Quick-Change Disc Various All stages Tool-free disc swapping — Shop Magnetic Discs →
Dot Flat Lap Disc Various Small parts / precision Dot pattern for small stone and precision grinding
Large Flat Lap Disc Various Large format processing 10"–24" for production flat lap machines

Related Tools

Frequently Asked Questions

  • Q: What is a flat lap disc used for?
    A: Flat lap discs are used on flat lap machines for grinding and polishing flat or slightly curved surfaces on gemstones, cabochons, and faceted stones. They are also used in faceting for grinding and pre-polish stages.
  • Q: What grit sequence should I use on a flat lap?
    A: A typical flat lap sequence is: 60–120 grit metal bond (coarse grinding) → 600 grit resin (fine grinding) → 1200–3000 grit resin (pre-polish) → polish compound on a leather or felt lap.
  • Q: What size flat lap disc do I need?
    A: Most hobby flat lap machines use 6" or 8" discs. Production machines may use 10"–24" discs. Check your machine's disc size specification before ordering.
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