4" Diamond Grinding Disc 100mm 80–3000 Grit Abrasive Wheel

4-Inch Diamond Coated Grinding Disc – Precision Abrasive for Wood, Stone & More

Take your woodworking, metalworking, and craft projects to the next level with this 4-inch (100mm) Diamond Coated Grinding Disc. Available in a wide range of grits from 80 to 3000, this abrasive wheel delivers consistent, controlled material removal whether you're shaping, smoothing, or polishing. The diamond coating ensures exceptional durability and cutting efficiency across a variety of materials including wood, stone, glass, ceramic, and metal.

Made in Mainland China.

Key Features

• Wide Grit Range: Available from 80 (coarse) to 3000 (ultra-fine) — tackle everything from aggressive stock removal to a mirror-smooth finish
• Diamond Coated Surface: Superior hardness for long-lasting, consistent cutting performance
• 4-Inch / 100mm Diameter: Compatible with standard angle grinders and bench grinders
• Versatile Use: Ideal for woodworking, lapidary, glass etching, tile, stone, ceramics, and metalworking
• Abrasive Block Design: Provides flat, even contact for precise surface work
• Durable Construction: Designed to maintain shape and cutting ability through extended use

Grit Guide

• 80–120 Grit (Coarse): Fast material removal, shaping, and rough grinding
• 240–600 Grit (Medium): Smoothing surfaces, removing scratches
• 800–1500 Grit (Fine): Pre-polish finishing and refining
• 2000–3000 Grit (Ultra-Fine): High-gloss polishing and final finishing

Specifications

• Diameter: 4 inch / 100mm
• Grit Options: 80, 120, 240, 320, 400, 600, 800, 1000, 1500, 2000, 3000
• Material: Diamond coated abrasive
• Type: Abrasive Disc / Grinding Wheel
• Origin: Made in Mainland China

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Learn more: OSHA guidance on hand and power tools

Frequently Asked Questions

Q: What materials can the 4-inch diamond grinding disc be used on?

A: This diamond coated abrasive disc is suitable for a wide range of materials including wood, stone, glass, ceramic, tile, and metal. The diamond coating provides the hardness needed to grind and finish both soft and hard surfaces effectively.

Q: Which grit should I choose for my project?

A: For initial shaping or fast stock removal, choose a coarse grit (80–120). For smoothing and refining surfaces, use a medium grit (240–600). For pre-polish and finishing work, select fine to ultra-fine grits (800–3000). Many users start coarse and work up to finer grits for the best results.

Q: Is this disc compatible with standard angle grinders?

A: Yes, the 4-inch (100mm) diameter is designed to fit standard angle grinders and bench grinders that accept 100mm grinding wheels. Always ensure your grinder's RPM rating is compatible with the disc before use.

Q: How long will the diamond coating last?

A: Diamond coated discs are known for their durability and longevity compared to conventional abrasive wheels. Lifespan depends on the material being worked and the pressure applied — using appropriate speed and even pressure will maximise the life of your disc.