3M Diamond Microfinishing — Flat Top 4" 4" Flat Top — 74 to 20 micron

These are replacement abrasive films for your 4" Flat Top Diamond Kits.

These industrial grade 3M Microfinishing diamond abrasives are perfect for hard materials such as semi & precious stones, carbides, cobalt, tungsten, chilled iron, etc. Use wet or dry.

Use for:

Lapidary & Watch Crystal: Ideal for cutting & shaping stones as well as smoothing out chips. Also removes deep to fine scratches on watch crystals.

For a higher polish on your stones or glass, use the 3M PREMIUM Polishing Diamond Kit after these Microfinishing Diamond abrasives.

Carbide Tools: Sharpen router bits, forstner bits, shaper cutters and various other tools. Also helps remove chips & nicks. Achieves a sharper-than-factory finish on cutting edges which reduces heat build-up during tool operation.


More Applications:

AUTOMOTIVE: Perfect for sharpening any high-speed steel machining/cutting tools. Get crisp edges on valve seats and stems, hone small parts of almost any shape.

JEWELRY: Fantastic results on jewelry: performs better than emery paper & fills porosity. Also works great on plastics and for glass defect repair.

WOODWORKING: Perfect for high-speed steels, it allows sharpening of a wide array of woodcarving & turning tools and knives. Fine hone and maintain the tips & edges of flat chisels, drill bits, counter sinks, fluted end mills, etc.

Recommended for use with 3M Cushions.

Combo Set Includes 1 of each of the following grades: 74, 45, 30, 20 micron

• These are replacement abrasive films for your 4" Flat Top diamond kits.
• Industrial grade 3M microfinishing diamond abrasives, for hard materials such as semi and precious stones, carbides, cobalt, tungsten and chilled iron. Use wet or dry.
• Lapidary and watch crystal: ideal for cutting and shaping stones and smoothing out chips, and removes deep to fine scratches on watch crystals.
• Carbide tools: sharpens router bits, forstner bits and shaper cutters, and removes chips and nicks — a sharper-than-factory edge.
• For a higher polish on stones or glass, follow with the 3M premium polishing diamond kit.
• Grades: 74 micron coarse, 45 micron medium, 30 micron fine, 20 micron very fine, and a 4-grade combo.