Drill bit Dedra DED1573 — 8 mm steel for stone, terracotta, glass, ceramic

Dedra DED1573 — 8 mm steel drill bit designed for drilling brittle and hard materials such as stone, terracotta, glass and ceramic. This single-piece bit fits handheld and machine drills where a hardened tip and steady cutting action are required for making precise holes in tiles, glass fittings, masonry and craft items. The bit’s geometry and steel construction provide controlled penetration and reduced chipping when used with appropriate speed and cooling.

Advantages

The Dedra DED1573 offers a compact 8 mm diameter in a solid steel design that balances rigidity and cutting accuracy for brittle substrates. Its single-piece construction minimizes flex and improves straight-line drilling. The bit is suitable for both manual and powered drilling, delivering repeatable hole size and edge quality when operated at correct speeds and with proper support. The compact size and material compatibility make it a versatile choice for repair, installation and precision craft tasks.

Suitable for

• Drilling holes in ceramic tiles for plumbing and fittings
• Creating openings in terracotta for mounting or repair work
• Making precise holes in glass for fixtures or decorative projects
• Small masonry drilling where an 8 mm hole is required

Key specifications

• Diameter: 8 mm
• Material: steel
• Compatible materials: stone, terracotta, glass, ceramic
• Pack quantity: 1 piece
• Intended use: manual and machine drilling in brittle/hard substrates

How to use

Select an appropriate drill with a compatible chuck and secure the workpiece to prevent movement. Start drilling at low speed to establish a steady contact point, increase speed gradually if needed, and avoid applying excessive axial force to reduce the risk of cracking in brittle materials. For glass and ceramic, use water or a suitable coolant to reduce heat and dust; for masonry, control dust and clear debris from the hole periodically. Finish the hole with measured, controlled passes rather than aggressive pressure to maintain edge quality.

Usage recommendations

Use protective eyewear and gloves when drilling; clamp or support the workpiece to prevent vibration. For ceramic and glass, begin drilling with a center punch or a starter mark and keep the drill perpendicular. Maintain moderate speed and use cooling for prolonged work. Replace the bit when wear degrades hole quality or increases cracking risk.