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what is aluminium oxide sandpaper?
Aluminium oxide sandpaper is an all-round abrasive that can be used on bare wood, painted surfaces, or metal. Its grit is available in a variety of grades and sizes, ranging from coarse to extra fine.
Grit is a term used to describe the size of the particles that make up an abrasive, or the abrasive grains. The grit is measured in a grit number that is preceded by the letter “P.” These grits range from P8 to P1200, with the lower the grit, the more coarse it is.
Friability is another consideration when choosing an abrasive, as some abrasives break easily when heat or pressure is applied to them. These are known as highly friable abrasives, while those with low friability can dull more quickly.
Hardness is also a factor in selecting an abrasive, but it is not as important as friability. Abrasive grit with higher hardness will last longer than abrasive grit with lower hardness.
Coating is another important consideration when choosing an abrasive, especially if you’ll be using it for sanding. There are open, closed, and flexible coats.
Open coats are best for sanding soft woods and metals. Closed coats are ideal for sanding curved or recessed edges on harder metals and woods.
Aluminum oxide sandpaper is available in a variety of grits and coatings. Its abrasive grains have a high level of durability, making it a popular choice for general woodworking. It can be sanded by hand, on a sanding block, or with a power tool sander.
