SiC (Silicon Carbide) is the hardest and sharpest of the minerals used in abrasives. Its hardness and very sharp form, make this abrasive ideal for various applications that do not require great pressure when cutting. Its grains are friable and, when broken, they continually expose new cutting edges that allow rapid removal of the material. It is more aggressive than Alox but wears out more quickly.

Lightweight and flexible, A or B papers are mainly used for manual operations or to support delicate, fine-grained operations. They can be prepared for wet work.
C or D papers, medium and light respectively, are used when some flexibility and resistance are required. Stronger and less flexible than the A and B papers, these types of supports are still chosen for manual work (dry or wet), allowing its usage on many sanding machines, even with medium pressure.

The indicated grits are the most common for the operations in question, but they do not exhaust all available alternatives. We will be happy to help you find the best solution for your case.

The indicated dimensions are merely illustrative and are common in the industry. OTA does not list them, as it uses an MTO system tailored to the needs of each client.