Diamut CNC Black Storm Finger Bits

High-performance CNC finger bits engineered for fast, chip-free machining on granite, quartz, marble, and Dekton.

Looking for a Versatile CNC Finger Bit That Handles Both Soft and Hard Stone?

Diamut CNC Black Storm Finger Bits are designed to deliver exceptional cutting speed, outstanding tool life, and clean machining across a wide range of stone materials. Whether you're fabricating granite, quartz, marble, engineered stone, or Dekton, Black Storm Finger Bits provide the performance professional fabrication shops demand.

Featuring an advanced 7-segment spiral design, these premium finger bits remove material quickly while maintaining smooth, controlled cutting with minimal chipping. Available in both soft bond and hard bond configurations, Black Storm tooling allows fabricators to match the bond to the material for maximum cutting efficiency and extended tool life.

Whether you're truing slab edges, roughing sink cutouts, or performing CNC interpolation, Diamut Black Storm Finger Bits help increase productivity while producing cleaner finished results.

What Fabricators Use Diamut Black Storm Finger Bits For:

• CNC sink cutouts
• Truing slab edges
• CNC interpolation
• Enlarging drilled holes
• Radius and inside corner machining
• Countertop fabrication
• Material removal before profiling
• High-production CNC machining

Advantages:

• Fast, chip-free cutting performance
• Available in soft bond for hard stone
• Available in hard bond for soft stone
• Excellent for granite, quartz, marble, engineered stone, and Dekton
• Electroplated option available for marble applications
• Advanced 7-segment spiral design
• 20 mm diameter
• Exceptional value and professional-grade quality
• Long-lasting diamond construction

Specifications:

• Diameter: 20 mm
• Segment Design: 7-segment spiral
• Bond Options:
  • Soft bond for hard stone
  • Hard bond for soft stone
• Electroplated version available for marble
• Designed for professional CNC stone fabrication

Choosing the Correct Bond

Selecting the proper bond helps maximize cutting performance and tooling life.

• Soft bond finger bits are recommended for hard materials such as granite and Dekton because they continually expose fresh diamonds as the tool wears.
• Hard bond finger bits are ideal for softer materials, helping slow diamond exposure and extend overall tool life.
• Electroplated finger bits are an excellent choice for machining marble and other softer natural stones where a smooth finish is critical.

Matching the bond to the material improves cutting speed, reduces chipping, and helps maximize tooling performance.

Whether you're producing custom countertops or operating a high-volume fabrication shop, Diamut CNC Black Storm Finger Bits provide the speed, durability, and precision professionals rely on every day.

BB Industries carries Diamut CNC tooling, finger bits, bridge saw blades, profile wheels, polishing pads, and fabrication supplies trusted by professional stone fabricators throughout North America.

BB Industries has you covered!

Frequently Asked Questions

What materials can Diamut CNC Black Storm Finger Bits machine?
These finger bits are designed for granite, quartz, engineered stone, marble, and Dekton, making them an excellent all-around choice for modern fabrication shops.

Why are different bond types available?
Different stone materials require different bond hardness. Soft bond tooling performs best on hard materials like granite and Dekton, while hard bond tooling is better suited for softer stones. This helps maximize cutting efficiency and tool life.

What is the advantage of the 7-segment spiral design?
The spiral segment design promotes efficient material removal, smoother cutting, improved cooling, and reduced chipping while maintaining excellent cutting speed.

Can these finger bits be used for sink cutouts?
Yes. Diamut Black Storm Finger Bits are ideal for sink cutouts, edge truing, hole enlargement, interpolation, and other common CNC machining operations.

Why choose the electroplated version for marble?
The electroplated version is specifically designed for marble applications, providing smooth cutting performance and excellent finish quality on softer natural stone materials.