Silicon Carbide is often used in wet grinding applications such as polishing stone and marble, as well as automotive polishing applications. In coarser grit, this abrasive is suitable for removing rust, deburring metal and glass, and refinishing wood floors (cutting/removing old finishes).
Silicon carbide is a hard and sharp abrasive, making it ideal for cutting hard materials such as metal, stone, paint and wood finishes. (For example, you can use it to sand ceramic finishes on wood floors.)
❤ The minimum grit range is 40 to 60.
❤ Medium grit paper ranges from 80 to 120 abrasives per square inch.
❤Premium papers start at 150 grit and end at 180 grit.
❤ Very fine 220 to 240 grit and ultra fine 280 to 320 grit are for finishing professionals.
Compared to aluminum oxide, silicon carbide has sharper and harder particles, but silicon carbide is less durable because it is fragile and has a narrower shape that wears faster. In sanding, you never want to skip more than one grit, so the next grit may be 120.
Use a coarse grit of 60 or 80 for fast wood removal. Use 100 grit for general purpose sanding, 120 or 180 grit for the best finish, but use power tools for sanding and hand sanding. Power tools will leave hidden scratches that will appear later. And always sand parallel to the grain.
Garnet is the best sandpaper for hand sanding wood. Flint sandpaper is economical, but not particularly durable. Flint is best for rough work on small projects and is used less often than many other sandpapers.