Diamond hole saw set Dedra DED1592SZ03 — 28, 35, 45, 68 mm with guide

Diamond hole saw set Dedra DED1592SZ03 — 28, 35, 45, 68 mm with guide is a kit of four diamond-coated hole cutters and a pilot guide designed for drilling precise circular openings in hard and brittle materials. The set covers common diameters for plumbing and electrical fixtures and is compatible with handheld drills and drill stands. The diamond coating and reinforced body allow cutting through tile, porcelain, glass and natural stone with controlled results when used with appropriate technique and cooling.

Advantages

The diamond-coated cutting edges provide improved durability and longer life compared with standard bi-metal hole saws when working with ceramic and stone surfaces. The included pilot guide helps keep the cutter centered for accurate holes and reduces walking on smooth surfaces. The range of diameters — 28, 35, 45 and 68 mm — covers typical penetrations for pipes, fittings and electrical fixtures, reducing the need to change tools on site. The cutters are compatible with common drills and can be used on a drill stand for higher precision.

Suitable for

• Cutting holes in ceramic wall and floor tiles
• Drilling openings in porcelain and glazed sanitaryware
• Creating precise holes in glass and some natural stones
• Installing plumbing penetrations and electrical boxes

Key specifications

• Cutter diameters: 28 mm, 35 mm, 45 mm, 68 mm
• Diamond-coated cutting edge for abrasive materials
• Includes pilot guide for centering and stability
• Suitable for use with handheld drills and drill stands
• Designed for wet or cooled drilling to extend tool life

How to use

Mark the center of the required hole and attach the appropriate diameter cutter to the drill with the pilot guide fitted. Secure the workpiece where possible or use a drill stand for improved alignment. Begin drilling at low speed to allow the pilot guide to engage and to prevent the cutter from wandering. Apply light, steady pressure and periodically introduce water or a cooling lubricant to the cutting edge to reduce heat and prolong service life. Increase speed moderately only once the cutter has established a stable cutting path, and finish the hole with controlled pressure to avoid chipping.

Usage recommendations

Use continuous water cooling or intermittent wetting when cutting tiles, porcelain, glass or stone. For best results, start drilling at low speed and avoid excessive axial force. When working on glazed surfaces, score lightly first if necessary and support the underside to minimise chipping. Replace worn cutters to maintain cutting quality and follow safety precautions including eye protection and dust control.