Diamax CDC300 Diamond Cone Tool
The Diamax CDC300 Diamond Cone Tool is a precision grinding accessory engineered for enlarging, shaping, and refining drilled holes in dense and brittle materials. Designed for professional tile installers and stone fabricators, this tool provides controlled material removal with clean, accurate results—making it ideal for finish work where precision is critical.
Specifically developed for use on porcelain, engineered stone (UCS), granite, ceramic tile, and other hard surfaces, the CDC300 allows operators to carefully expand existing holes without causing cracks, fractures, or excessive chipping. Its tapered cone profile enables gradual, controlled widening of openings, making it perfect for adjusting faucet holes, plumbing penetrations, anchor points, and fixture cutouts.
Constructed with high-quality industrial diamond abrasives, the CDC300 delivers efficient grinding performance while maintaining durability under demanding job-site conditions. The diamond bond is formulated to provide steady cutting action and smooth surface refinement, reducing the need for excessive pressure and helping preserve the integrity of delicate materials such as porcelain and ceramic.
Designed for compatibility with handheld angle grinders and pneumatic tools, the CDC300 offers flexibility for both shop fabrication and on-site installation adjustments. Its balanced construction promotes stable operation and improved control, allowing professionals to fine-tune openings with accuracy and confidence.
Whether correcting misaligned drill holes, slightly enlarging cutouts, or refining rough edges after core drilling, the Diamax CDC300 Diamond Cone Tool delivers reliable, chip-minimized performance for clean, professional results.
Key Features & Benefits
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Diamond cone tool for hole enlargement and refinement
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Ideal for porcelain, UCS, granite, and ceramic tile
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Tapered design for controlled, gradual expansion
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Minimizes chipping and surface damage
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Suitable for faucet holes, anchors, and plumbing openings
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Compatible with handheld grinders and pneumatic tools
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Durable diamond construction for long service life
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Provides precise, professional finishing results
The Diamax CDC300 is an essential detailing tool for installers and fabricators who require accuracy, control, and clean edge refinement in hard-surface drilling applications.
Key Features
Precision Hole Expansion
Smoothly enlarges and shapes holes created by core drills.
Fine Diamond Grit
Provides a refined surface finish while grinding.
Durable Construction
Built with premium diamond segments for long life.
Wet or Dry Use
Can be used with water or dry, depending on application and tool setup.
Standard Thread Fit
Designed to fit common grinder or pneumatic tool threads (e.g., 5/8″-11).
Specifications
| Specification | Detail |
|---|---|
| SKU / Model | CDC300 |
| Tool Type | Diamond Cone Hole Expander |
| Effective Range | Expands holes to approx. 1.5″ – 3″ diameter (varies by technique) |
| Grit Level | Fine/Medium |
ITEM LIST
| ITEM # | SIZE | Grit | Fitting | RPM |
|---|---|---|---|---|
| CDC100 | 1/4″ TIP TO 1 3/8″ DIAMETER | Fine 100 | 5/8″ – 11 thread | 3,000 – 4,000 |
| CDC300 | 1 3/8″ TIP TO 3″ DIAMETER | Fine 100 | 5/8″ – 11 thread | 3,000 – 4,000 |
