Diamond Smoothing Pads

Diamond Smoothing Pads – Magnetic Backing for Stone, Glass & Lapidary

Professional diamond pre-polishing smoothing pads with magnetic backing for flat lap machines. Available in 6" to 24" and grits 60 to 50,000 — covering every stage from coarse grinding to ultra-fine pre-polish. Magnetic backing enables fast, tool-free pad changes for efficient lapidary, glass, and stone finishing on Genie, Titan, and compatible flat lap machines.

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Pad Specifications & Pricing

Size Grit Range Price Application
6" 60–50,000 From $45.00 Small flat lap, detail work
8" 60 $45.00 Coarse grinding, stock removal
10" 60–50,000 $55.00 Full progression: shaping to pre-polish
12" 60–50,000 $60.00 Full progression, larger stones
14" 60–50,000 $70.00 Large stone slabs, full grit range
16" 60–50,000 $120.00 Heavy-duty flat lap, production use
18" 60–50,000 $135.00 Large format, coarse to fine
24" 60–50,000 From $135.00 Industrial flat lap, large slabs

Grit Selection Guide

Grit Stage Best For Surface Result
60–140 Coarse grinding Initial shaping, saw mark removal Rough, shaped surface
280–325 Medium sanding Scratch removal after coarse stage Smooth, refined texture
600–1,200 Fine sanding Pre-polish surface preparation Near-scratch-free surface
3,000–8,000 Fine pre-polish Before ultra-fine stages Semi-gloss, minimal scratches
14,000–50,000 Ultra-fine pre-polish Before cerium oxide final polish High gloss, mirror-ready

Compatible Applications

  • Flat lap machine grinding and pre-polishing (Genie, Titan, Hi-Tech Diamond)
  • Lapidary gemstone cabochon flat grinding and smoothing
  • Glass surface scratch removal and refinement on flat lap
  • Ceramic tile and porcelain flat surface preparation
  • Quartz, agate, jasper, obsidian, and petrified wood flat sanding
  • Large stone slab surface grinding (16"–24" pads)
  • Multi-stage grit progression with fast magnetic pad changes

Related Tools

Frequently Asked Questions

  • Q: What flat lap machines are compatible with magnetic backing diamond smoothing pads?
    A: Compatible with Genie, Titan, Hi-Tech Diamond, and similar flat lap machines with a magnetic platen. Verify your machine’s platen diameter before ordering — available in 6" to 24" to match most standard flat lap sizes.
  • Q: What grit sequence should I use for polishing gemstones on a flat lap?
    A: Start at 60–140 for shaping, progress through 280, 325, 600, 1,200 for smoothing, then 3,000, 8,000, 14,000, 50,000 for pre-polish. Finish with cerium oxide for a mirror result.
  • Q: Can diamond flat lap smoothing pads be used wet?
    A: Yes — wet use is strongly recommended. Water or lapidary coolant reduces heat, extends pad life, and produces a cleaner finish on all stone and glass materials.
  • Q: What materials can these diamond smoothing pads work on?
    A: All natural gemstones (agate, jasper, quartz, obsidian, petrified wood), optical glass, ceramic, and hard stone with Mohs hardness above 5. Not recommended for soft materials below Mohs 4.
  • Q: How do magnetic backing pads speed up lapidary work?
    A: Instant grit changes — lift off the used pad, place the next grit. No adhesives, tools, or waiting required. This dramatically reduces downtime between grit stages in multi-step polishing sequences.