Features of the 125mm P40 Sanding Discs

Technical Specification

Applications of the P40 Sanding Discs

• Removing old paint coatings from wood and metal
• Removing rust and mill scale from metal surfaces
• Levelling uneven areas and removing burrs from wood
• Preparing surfaces before filling or priming
• Sanding hardwoods and composite materials
• Keying and chamfering edges on timber components
• Removing old layers of adhesive and surface contamination
• Initial sanding before using finer grits

Use and Maintenance

When working with P40 sanding discs, apply the appropriate pressure to the sander - too much shortens disc life and loads the motor, while too little reduces sanding efficiency. P40 grit generates a considerable amount of dust, so connecting the sander to an industrial vacuum or dust bag is recommended.

Sanding discs should be stored in a dry place, away from sources of moisture. Moisture weakens the hook and loop backing and may cause the abrasive grains to become detached. After finishing work, it is worth cleaning any remaining dust from the sander's backing pad, which ensures better adhesion of subsequent discs.

Once a P40 disc is worn, the surface is usually sanded with finer grit discs (P80, P120, P180) to achieve a smooth finish. Moving directly from P40 to very fine grits may leave visible scratches.