Collection: 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
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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.
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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.
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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.
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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.
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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.
