liivapabereid

Liivapaber (sandpaper) is an abrasive material used for smoothing, shaping, and finishing surfaces. It consists of abrasive grains bonded to a backing made of paper, cloth, or film, with a resin or glue binder. Common abrasive materials include aluminum oxide, silicon carbide, and garnet. The grit size indicates abrasiveness: lower numbers are coarser and remove material quickly, while higher numbers produce finer finishes.

Backings vary in durability and flexibility. Paper-backed sandpapers are inexpensive and suitable for light to moderate use, while cloth-backed varieties offer greater flexibility and durability for contour sanding. Film-backed sandpapers are stiff and resistant to tearing, useful for flat surfaces or long strokes. Many products are waterproof or wet/dry, allowing sanding with water to reduce dust and heat.

Applications and types: Sandpapers are used in woodworking, metalworking, and finishing of painted or primed surfaces. Grains and binders are selected based on the material and desired finish; aluminum oxide is common for wood, silicon carbide for hard materials, and garnet for delicate work. Sandpapers come in a range of grits from coarse (e.g., 40–60) to very fine (over 400); professionals often progress through grits to achieve a smooth surface.

Usage and safety: Use with a sanding block or power sander and avoid excessive pressure. Work with the grain when possible and keep the surface clean of debris. Wear a dust mask or respirator and use dust extraction to minimize inhalation of dust. Dispose of used sandpaper according to local waste guidelines.