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How to Choose the Right Discs
Choosing the right sanding disc depends on your application, substrate, and the finish you need. For automotive panel work and spray painting prep, ceramic sanding discs deliver superior cut rates and last significantly longer than standard aluminium oxide discs — making them the preferred choice for professional spray painters and panel beaters across Australia.
Grit selection guide:
•P80–P120: Heavy stock removal, shaping filler, and stripping old coatings
•P180–P240: Feather-edging, primer preparation, and intermediate sanding
•P320–P400: Final prep before primer or sealer application
•P600–P1000: Wet sanding between clear coat layers and de-nibbing
•P1500–P3000: Final finish sanding before polishing and buffing
SPX sanding discs are available in 75mm, 125mm (5-inch), and 150mm (6-inch) diameters with multi-hole dust extraction patterns compatible with Festool, Mirka, Rupes, and other leading orbital sanders.
All sanding discs ship Australia-wide from our Melbourne warehouse with fast dispatch on orders placed before 2pm AEST.
Frequently Asked Questions — Discs
What are ceramic sanding discs used for?
Ceramic sanding discs are engineered for high-performance material removal on automotive panels, metal, composites, and hard coatings. The ceramic grain self-sharpens during use, providing a consistently aggressive cut that lasts up to 3x longer than standard aluminium oxide discs. They are the industry standard in Australian panel shops and automotive refinishing.
What grit sanding disc should I use for automotive paint prep?
For automotive paint preparation, start with P180–P240 for feather-edging and primer prep, step down to P320–P400 for final sanding before primer, and use P600–P800 for sanding between coats. P1500–P3000 is used for de-nibbing and wet sanding before polishing.
Do you ship sanding discs Australia-wide?
Yes, SPX Abrasives ships all sanding discs and abrasive products Australia-wide from our Melbourne warehouse. We offer fast dispatch on orders placed before 2pm AEST, with delivery typically within 2–7 business days depending on your location.
What size sanding discs does SPX stock?
SPX stocks sanding discs in 75mm (3-inch), 125mm (5-inch), and 150mm (6-inch) diameters. Our discs feature multi-hole dust extraction patterns compatible with Festool, Mirka, Rupes, 3M, and other professional orbital sanders.