GEKO HEX 3mm Drill Bit for Glass and Ceramics, 3 mm

GEKO HEX 3mm Drill Bit for Glass and Ceramics, 3 mm is a purpose-built cutting tool for creating small, clean holes in brittle materials such as glass and ceramic tiles. The bit has a HEX shank that provides a secure fit in chucks and quick-change drill holders, while the tip geometry is optimized to reduce chipping and cracking during drilling. It is suitable for use with handheld drills and drill presses when installing glass fixtures, ceramic fittings, or making precise penetrations in tile work.

Advantages

The HEX shank ensures reliable grip and minimizes slippage in standard chucks and quick-change adapters. The specialized tip and hardened cutting surfaces deliver controlled penetration and cleaner edges on brittle substrates, reducing the need for rework. Its small 3 mm diameter is useful for pilot holes, mounting small fixtures, and detail work where precision is required.

Suitable for

• Drilling holes in glass panes and mirrors for small fixtures
• Creating mounting or fixture holes in ceramic wall and floor tiles
• Pilot holes for anchors and small fasteners in glazed surfaces
• Detail and hobby work requiring precise, small-diameter holes in brittle materials

When it may not be suitable

This 3 mm glass and ceramic drill bit is not intended for heavy masonry, concrete, or metal drilling. It is designed for brittle, glazed materials and may wear quickly or chip if used at excessive speed, with too much axial force, or on very hard or reinforced substrates. For larger holes or high-volume production drilling consider using bits specifically designed for those tasks.

Key specifications

• Drill diameter: 3 mm
• Shank type: HEX shank for secure chuck grip
• Material suitability: glass, glazed ceramic tiles, mirrors
• Recommended use: handheld drills and drill presses at appropriate speeds
• Tip: optimized geometry for reduced chipping on brittle surfaces

How to use

Secure the GEKO HEX 3mm drill bit in the drill chuck or quick-change adapter, ensuring the HEX shank is fully seated. Mark the drilling point and, if possible, use tape or a guide to prevent bit walking on smooth surfaces. Start at a low speed, apply steady light axial pressure, and let the bit do the cutting. For glass and tile work, intermittent drilling with cooling (water or a drip) reduces heat and helps prevent cracking. After finishing, withdraw the bit carefully and inspect the hole for clean edges.

What to consider before purchase

• Match the 3 mm diameter to the fasteners or fixtures you plan to use
• Ensure your drill supports a HEX shank or use an appropriate adapter
• Consider drilling speed and cooling methods for fragile materials
• Not suitable for concrete, metal, or heavy-duty masonry applications

Usage recommendations

Use low to moderate drill speeds, secure the workpiece, and apply gentle, steady pressure. For best results on glass and glazed ceramics, use water cooling or short drilling intervals to minimize heat and reduce the risk of chipping or cracking.