Wire Cup Brush Makita D-39780 90 mm — for wood, steel, paint and rust removal

Makita D-39780 is a 90 mm wire cup brush designed for surface preparation and cleaning of wood and metal substrates. It is intended to be mounted on compatible rotary power tools to remove paint, rust and other coatings, and to assist in sanding, deburring and general surface finishing operations. The brush’s construction provides an abrasive action that accelerates material removal while maintaining control during renovation and maintenance tasks.

Advantages

The 90 mm wire cup brush delivers efficient removal of paint, corrosion and scale from a variety of surfaces without requiring chemical strippers. Its shape and wire configuration provide consistent contact with uneven workpieces, reducing the need for repeated passes. Designed for use with rotary tools, the brush offers rapid stock removal and helps prepare surfaces for subsequent treatments such as painting or sealing. The compact diameter improves access in tighter areas compared with larger cup brushes.

Suitable for

• Removing paint and varnish from wooden and metal surfaces
• Eliminating rust and corrosion from steel parts and tools
• Deburring welded joints and metal edges
• Preparing surfaces prior to repainting, sealing or coating
• General cleanup and restoration tasks in renovation and maintenance work

Key specifications

• Brush type: wire cup brush
• Diameter: 90 mm
• Suitable materials: wood, steel and other similar substrates
• Primary functions: paint removal, rust removal, deburring, surface preparation
• Attachment: designed for mounting on compatible rotary power tools

How to use

Secure the wire cup brush to a compatible rotary tool according to the tool manufacturer’s instructions, ensuring the power tool is unplugged or its battery removed during mounting. Wear appropriate personal protective equipment including eye protection, gloves and a dust mask. Start the tool at low speed to verify correct mounting and balance, then increase to the recommended operating speed for the task. Apply steady, even pressure and move the brush across the workpiece to remove coatings or corrosion. Avoid excessive pressure or side loading to prolong brush life and maintain control.

Usage recommendations

Use the brush on clean, dry surfaces where possible and choose a rotational speed suitable for the material being worked on. For painted surfaces, test a small area first to confirm the desired level of removal. Replace the brush if wires become excessively worn, deformed or detached. Store the brush in a dry location away from corrosive substances.