XPRESSCUT Core Bit Application Guide

Selecting the correct diameter core bit is critical for a professional finish. A hole that is too small will not accept the pipe fitting, while a hole that is too large will require packing and may compromise structural integrity or weather sealing. The XPRESSCUT range of dry diamond core bits provides a comprehensive selection of sizes to match UK building standards for pipework, ventilation, and conduit. These bits are engineered for superior performance, featuring 10mm high, laser-welded diamond segments for exceptional durability and cutting life. The spiralled and slotted barrel design actively aids in dust removal, which keeps the cutting edge cooler and allows for a faster, more efficient cut through materials like semi-engineering bricks, clay products, and limestone aggregate concrete.

The XPRESSCUT Core Bit Application Guide

The following table serves as an authoritative reference for selecting the correct XPRESSCUT core bit for a wide range of professional applications. It synthesises data from manufacturer specifications and established trade practices to provide certainty and confidence in product selection.

Core Bit Diameter	Primary Applications & Common Uses	Ideal For (Trades)
22mm & 28mm (300mm length)	Pipework: Small-bore central heating pipes, gas supply lines, condensate drain lines, 22mm overflow pipes. Electrical: Small electrical cables. Specialist Use: Acts as a clean pilot hole for the Condensemate system, preventing brick-face blowout compared to hammer-action masonry bits.	Plumbers, Gas Engineers, General Builders
42mm	Plumbing: 32mm (1.25") waste pipes for small basins and kitchen sinks. Electrical: Larger single electrical cables or small multi-cable runs.1	Plumbers, Electricians
52mm	Plumbing: 40mm (1.5") standard waste pipes for sinks and basins. Heating: Some modern, smaller boiler flues.1	Plumbers, Gas Engineers
65mm	Plumbing: 50mm (2") solvent-weld waste pipes (e.g., for baths, multiple basins). Ventilation: Small ventilation outlets.	Plumbers, General Builders
78mm	Heating: Many standard domestic boiler flues. Plumbing: Can be used for smaller soil pipes or creating openings for multiple pipe clusters.	Gas Engineers, Plumbers, HVAC Installers
112mm & 117mm	Ventilation: Standard 100mm (4") domestic extractor fans (kitchens, bathrooms). Plumbing: 100mm/4" soil pipes and waste pipes. Heating: Larger flue outlets. The 117mm provides slightly more clearance.	Electricians, HVAC, Plumbers, General Builders
127mm	Plumbing: Standard 110mm soil and drainage pipes (provides necessary clearance for pipe socket). Heating: Larger domestic boiler flues. Ventilation: Tumble dryer vents.	Plumbers, Gas Engineers, General Builders
152mm	Ventilation: 125mm (5") commercial-grade extractor fans and mechanical ventilation systems. Utilities: Large utility conduits and service entries. Heating: Commercial flue pipes.	HVAC Installers, Commercial Plumbers, General Contractors