Hole Saw Bosch OTWORNICA PRO Multi Material 140 mm

Hole saw Bosch OTWORNICA PRO Multi Material 140 mm is a circular cutting tool designed to create precise 140 mm diameter holes in a variety of materials. Manufactured by Bosch, this hole saw is intended for use with drills and cordless drivers for tasks such as installing pipes, routing cables and making ventilation openings. The tool is suitable for work in wood, plastics, drywall and thin metal sheets, providing clean, repeatable cuts when used with appropriate pilot bits and drive adapters.

Advantages

The Bosch OTWORNICA PRO Multi Material 140 mm features a construction that balances cutting speed and edge durability for multi-material performance. It produces smooth, circular cutouts with reduced chipping on wood and plastics, while its tooth geometry supports penetration into thin metal and plasterboard. Compatibility with common drill attachments and standard pilot bits makes it straightforward to set up and change, and the large 140 mm diameter meets requirements for many piping and ducting installations.

Suitable for

• Cutting holes for pipes and conduits in renovation and installation work
• Making ventilation and extractor openings
• Creating cable passages and wiring access points
• Installing recessed fixtures and circular fittings in wood, drywall or plastic panels

Key specifications

• Hole diameter: 140 mm
• Designed use: multi-material cutting (wood, plastics, drywall, thin metals)
• Tool compatibility: drills and cordless drivers with appropriate arbor
• Cut type: circular cutout for through-holes
• Construction: hardened cutting teeth suitable for mixed-material applications

How to use

Securely fit the hole saw onto a compatible arbor and attach a suitable pilot bit. Mark the centre of the intended hole on the workpiece and position the pilot bit at this point. Start drilling at low speed to establish the pilot hole, then increase speed as appropriate for the material while maintaining firm, steady pressure. For thicker or denser materials, progress gradually and clear debris from the cutting area to prevent binding. After cutting, remove the plug and deburr the hole edges if necessary to achieve a clean finish.

Usage recommendations

Use appropriate personal protective equipment, including eye protection and gloves, and select drill speed and feed that match the material being cut. For metal and harder plastics, apply cutting lubricant and avoid excessive pressure. When working with drywall or brittle plastics, use moderate speeds to minimise chipping. Ensure the arbor and pilot bit are compatible and securely tightened before operation.