Diamond drill bit for porcelain stoneware Smart 12 mm SM-25-120

Diamond drill bit Smart 12 mm SM-25-120 is a precision cutting tool designed for drilling clean, accurate holes in porcelain stoneware (gres) and other hard ceramic surfaces. The bit has a 12 mm cutting diameter with a diamond-impregnated tip that maintains shape and cutting performance when working through dense, brittle materials. It is compatible with standard hand drills and drill presses when used at appropriate speeds and with cooling to extend life and preserve hole quality.

Advantages

The diamond cutting edge provides high wear resistance and consistent performance on porcelain stoneware, producing smooth hole walls and minimal chipping. The 12 mm diameter delivers a common hole size for fixtures and fittings while keeping vibration and breakage risk low. The bit’s design enables stable drilling when combined with correct feed pressure and cooling, reducing the need for rework and ensuring repeatable results across multiple tiles.

Suitable for

• Drilling holes for sanitary fixtures and plumbing in porcelain tiles
• Tile installation where precise anchor or dowel holes are required
• Ceramic workshop tasks involving dense gres and glazed tiles
• Drilling in tiled walls and floors using controlled-speed drilling

Key specifications

• Cutting diameter: 12 mm
• Tip type: diamond-impregnated cutting edge
• Intended materials: porcelain stoneware (gres), hard ceramic, glazed tiles
• Recommended use: wet or cooled dry drilling to reduce heat and wear
• Shank compatibility: standard round shank for conventional hand drills and drill presses

How to use

Secure the workpiece and mark the drilling point. Use a low to moderate drill speed and steady, light pressure to avoid cracking the tile. Begin drilling with intermittent contact or a slight rocking motion until a pilot groove forms, then continue with steady rotation. Apply cooling by using water or periodic pauses to lower temperature at the cutting edge. After completing the hole, withdraw the bit while the drill is still turning slowly to clear debris and prevent snagging.

Usage recommendations

For best results, use the diamond drill bit with a drill stand or guide to maintain perpendicularity and reduce lateral forces. Keep the bit cool with a steady water flow or periodic lubrication, and avoid excessive feed pressure. Inspect the bit for wear before each job and replace when cutting performance degrades to prevent damage to workpieces.