7mm 5pcs Electroplated Diamond Core Drill Bits for Glass, Ceramic, Porcelain, Tile & Stone

The Diamond Core Drill Bits (also known as diamond hole saws) are the gold standard for precision drilling in ultra-hard materials like glass, stone, ceramics, and gemstones. Renowned for their durability and versatility, these tools are essential for lapidary artisans, jewelers, and industrial professionals.

Key Features & Applications:

1. Material Compatibility:
   • Ideal For:
     • Glass: Sea glass, fused glass, stained glass.
     • Stone: Gemstones, pebbles, granite, marble.
     • Ceramics: Porcelain tiles, glazed pottery.
     • Organic Materials: Shell, bone, fossil, hardwoods.
   • Avoid: Soft metals, soft wood (use HSS or carbide bits instead).
2. Precision Sizing:
   • Jewelry-Making: Use solid-tip bits as small as 0.75mm for delicate holes in beads or cabochons.
   • Industrial/Artistic: Opt for core drills (1mm+) for plates, dense sea glass, or ceramic tiles.
3. Design Advantages:
   • Diamond-Embedded Edges: Ensures clean cuts without chipping or cracking.
   • Coolant Compatibility: Use water to prevent overheating and extend bit life.

Technical Recommendations:

• For Hard Materials (e.g., Sapphire):
  • Use low RPM settings and frequent cooling.
  • Expect longer drilling times; keep spare bits on hand.
• For Soft Materials (e.g., Opal):
  • Higher RPM with gentle pressure to avoid fractures.

Comparison: Diamond vs. Alternative Drill Bits

Why Choose Diamond Core Bits?

• Unmatched Hardness: Cut through materials up to Mohs 10 (e.g., sapphire, quartz).
• Smooth Finishes: No secondary polishing needed for jewelry or artistic projects.
• Longevity: Outlast traditional bits in demanding workflows.

Applications:

• Lapidary & Jewelry: Drill holes in gemstones or beads.
• Construction: Create clean openings in tiles or concrete.
• Art & Craft: Precision work on sea glass art or fossil displays.

Upgrade your toolkit with Hans Diamond Core Drill Bits for precision, durability, and flawless results.