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Calidad Diamond Chamfer Cone 35mm-75mm "Big Boy"

The Calidad Diamond Chamfer Cone "Big Boy" 35mm-75mm is a robust tool engineered to transform grinding tasks with precision and efficiency. Designed to tackle the most challenging hole edges on hard surfaces, it excels in cleaning up or enlarging holes for toilet flanges, shower valves, and more, making it an essential chamfering tool for any demanding grinding project.
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  • Description
  • Applications
  • Use-Cases
  • Tech Specs

"Big Boy" Diamond Chamfer Cone 35mm-75mm — Precision and efficiency in all your grinding tasks

Engineered for excellence, the Calidad Diamond "Big Boy" is an indispensable universal tool for a diverse range of applications, including polishing, stone carving, hollow tangents, shaping, trimming, and enlarging holes. It effortlessly creates rounded indentations to accommodate pipes or electrical wire lines, making it ideal for achieving flawless inside radius corners.

Enhance the visual appeal of edge finishing on exposed holes with the Calidad Diamond Beveling Chamfer Bit. It consistently delivers smooth, uniform results and is perfectly suited for a variety of materials, including porcelain, hard ceramics, granite, marble, and stone.

Consider this innovative chamfering tool an investment in your craft. Elevate your grinding tasks to new heights with its exceptional durability, precision, and versatility. Once you experience the difference, you'll wonder how you ever managed without it.

The Calidad Diamond Beveling Chamfer Cone is highly recommended for tile installers, general contractors, plumbers, electricians, remodelers, and DIY enthusiasts alike. Embrace this versatile tool's professional-grade impact and watch your projects reach new levels of excellence.


A lifesaver for any curve that needs grinding. 

Disclaimer: This is not a core bit for drilling. The tool is designed for beveling and cleaning hard surface holes, and reinforcing /cleaning chipped borders.


Hard Ceramics 




Enlarging Holes for Plumbing Fixtures: Ideal for precision work on granite countertops or porcelain tiles, ensuring a snug fit for plumbing components.


Shaping Curves for Toilet Flanges and Shower Valves: Perfect for adjusting and refining large hole edges in bathrooms, providing a clean, professional finish.


Creating Rounded Indentations for Pipes or Electrical Lines: Enables the easy accommodation of pipes or wires, ensuring smooth, rounded corners for a flawless installation.

  • Material: High-quality diamond with vacuum brazed technology

  • Grit: #70-80

  • Sizes Available: 35mm to 75mm

  • Suitable For: Polishing, stone carving, hollow tangent creation, shaping, trimming, enlarging holes

  • Compatible Surfaces: Porcelain, hard ceramics, granite, marble, stone

  • Construction: Durable premium metal/steel

  • Diamond Concentration: High, for increased strength and tool life

  • Thread Compatibility: Designed for use with 5/8"-11 thread grinders

  • Recommended Speed: 11,500 RPMs or slower

  • Features: Fine finish, quick milling capabilities, easy to clean and trim