Diamond Laps & Discs

Diamond Laps & Discs – Flat Lap Discs, Full Face Laps & Dot Discs for Lapidary Grinding & Polishing

Professional diamond laps and discs for lapidary flat lap grinding and polishing. Includes standard diamond flat lap discs (6"–24"), nickel bonded full face laps (6"–8"), and diamond dot magnetic discs (6"–24") — all available in magnetic, PSA, and plain backing options across 45–3000 grit. Compatible with all standard flat lap machines and magnetic backing plate systems. Use with water cooling for best results.

🔥 Shop Diamond Laps & Discs – From $10.00

Available Sizes & Pricing

Product Type Size Grit Range Backing Price From
Diamond Flat Lap Disc 8" (1/2" arbor) 60 – 3000 Magnetic / PSA / Master Lap / None $12.00
Diamond Flat Lap Disc 10" 45 – 3000 Magnetic / PSA $40.00
Diamond Flat Lap Disc 12" 45 – 1200 Magnetic / PSA / None $62.00
Diamond Flat Lap Disc 14" 45 – 600 Magnetic / PSA / None $105.00
Diamond Flat Lap Disc 16" 45 – 600 Magnetic / PSA / None $145.00
Diamond Flat Lap Disc 18" 45 – 600 Magnetic / PSA / None $160.00
Nickel Bond Full Face Lap 6" 60 – 3000 Magnetic / PSA / Master Lap / None $13.50
Nickel Bond Full Face Lap 8" 60 – 3000 Magnetic / PSA / Master Lap / None $22.00
Diamond Dot Disc 6" 60 – 600 Magnetic $10.00
Diamond Dot Disc 14" 60 – 600 Magnetic $65.00
Diamond Dot Disc 24" 60 – 600 Magnetic $195.00

Disc Type Guide

Type Surface Pattern Best For
Standard Flat Lap Disc Continuous diamond surface General flat lapping, cabochon base grinding, slab finishing
Nickel Bond Full Face Lap Full face nickel bond — uniform coverage Faceting, precision flat lapping, consistent material removal
Diamond Dot Disc Dot pattern — open channels Aggressive grinding, better coolant flow, faster material removal

Compatible Applications

  • Lapidary flat lap grinding — cabochon base flattening, slab surface finishing
  • Gemstone faceting — full face laps for accurate facet grinding
  • Stone slab flat surface preparation before polishing
  • Glass flat grinding and surface leveling
  • Compatible with all standard flat lap machines (6"–24" platens)
  • Magnetic backing for instant disc changes; PSA for fixed single-grit setups

Related Tools

Frequently Asked Questions

  • Q: What is the difference between flat lap discs, full face laps, and dot discs?
    A: Standard flat lap discs have a continuous diamond surface for general flat lapping and cabochon work. Full face nickel bond laps deposit diamond uniformly across the entire disc surface for consistent, accurate material removal — preferred for faceting. Dot discs have a dot pattern with open channels between dots for better coolant flow and faster, more aggressive material removal on harder materials.
  • Q: What size flat lap disc do I need?
    A: Match the disc diameter to your flat lap machine's platen size. Common sizes: 8"–10" for standard bench-top flat lap machines, 12"–14" for mid-size production machines, 16"–18" for larger production systems, and 24" for large production polishing machines.
  • Q: What backing option should I choose?
    A: Choose magnetic backing for multi-grit workflows where you frequently switch between grit stages — magnetic allows instant disc changes in seconds. Choose PSA for fixed single-grit setups where you run one grit for extended periods. Choose Master Lap backing for faceting machine master lap mounting.
  • Q: What grit sequence should I use for flat lapping a stone slab?
    A: Start with 60–80 grit for aggressive surface leveling, progress through 140–325 grit for surface refinement, then 600–1200 grit for fine smoothing, and finish with diamond smoothing pads (3000–8000 grit) before final polishing compound on a felt pad.
  • Q: Do flat lap discs require water cooling?
    A: Yes — always use water cooling with diamond flat lap discs. Water prevents heat buildup, extends disc life, removes grinding swarf, and produces cleaner, more consistent grinding results on stone and glass.