Marcrist Dust Extraction Combi Unit – 1/2 Inch

The Marcrist 1/2 inch dust extraction combi unit is designed to work with diamond core drilling equipment, giving you a reliable way to manage dust and water slurry at the point of drilling. If you’ve ever cored through a wall inside a building and spent the next hour cleaning up, you’ll know exactly why this exists. The unit connects your core drill barrel to a vacuum or extraction system, containing the mess rather than letting it spread across the floor, the walls, and somehow your packed lunch.

This is a 1/2 inch BSP fitting, which is the standard thread size used on the majority of core drill barrels and rigs in the UK trade. That matters because compatibility is the first thing you need to check before ordering any extraction attachment — a mismatched thread means it’s going back in the box before the job starts.

Where the Marcrist Dust Extraction Combi Unit Earns Its Keep

Core drilling indoors is where this really comes into its own. Drilling through walls or floors for pipework, cable runs, or ductwork in occupied buildings — offices, hospitals, schools, residential properties — generates a significant amount of dust and wet slurry depending on whether you’re dry or wet coring. The combi unit manages both, making it a practical piece of kit whether you’re running water through the barrel or drilling dry with vacuum extraction.

Marcrist has been making diamond tooling and accessories for a long time, and the fit and finish on their accessories tends to reflect that. This isn’t a throw-it-in-the-van-and-hope piece of kit. It’s designed to be used regularly with professional core drilling rigs and hand-held core drills that take a 1/2 inch BSP connection.

Dry Coring Versus Wet Coring

With dry coring setups, the combi unit channels dust directly into your vacuum. With wet coring, it helps contain the slurry at the point of work rather than letting it run down the wall or pool on the floor. Either way, you’re protecting the work area, keeping the customer happy, and saving yourself clean-up time that nobody is paying you for. The marcrist 1/2 inch dust extraction combi unit is one of those accessories that pays for itself the first time you use it on a sensitive site.