Well-fitted core drill shrouds and collectors make the difference between clean cores and a room full of dust. The steps below focus on reliable seals, stable airflow and simple checks you can repeat on every job.

Preparation and seal integrity

Inspect the substrate and remove loose material with an industrial vacuum. Check the shroud gasket for nicks and ensure it sits flat. Lightly dampen porous surfaces to improve sealing for dry capture. Mark the centre and pre-score to prevent the shroud from walking.

Vacuum selection and hose routing

Use an M- or H-Class vacuum with a bag and high-efficiency final filter; specify H14 if RCS may be present. Prioritise airflow under load, not free-air figures. Keep hoses short, avoid tight bends, and match diameter to the shroud port to prevent choking. Auto filter-clean helps maintain flow during long cores.

Mounting and leak checks

Anchor the rig if required, then seat the shroud and apply vacuum to create suction. Perform a quick leak test by running a finger around the edge or using a light smoke puff; re-seat if you feel ingress. Start the vacuum before engaging the bit and maintain steady feed without rocking.

Adapting to position and diameter

For overhead or vertical faces, use a collector with stronger footing or a rig mount. When changing core size, re-check gasket compression and flow. If the seal loosens mid-core, pause and re-seat rather than pushing through.

MAXVAC ring collectors are often paired with H-Class vacuums on masonry to stabilise capture without changing drilling technique.

Housekeeping and verification

Vacuum residues with H-Class filtration; avoid sweeping and compressed air. If fine dust escapes, run an air scrubber near the workface for 15–30 minutes. Keep brief COSHH notes on equipment and filter changes. Where work is critical, trend PM2.5/PM10 with a handheld monitor.

Practical takeaways

• Clean, inspect and seat the shroud; test for leaks before drilling.
• Match hose diameter; prioritise under-load airflow and filter class.
• Start vacuum first; drill with steady feed to maintain the seal.
• Re-check seals when changing diameters or orientation.
• Finish with H-Class vacuuming and short air scrubbing if needed.