Polishing Method for Fiberglass Sculpture

industry news2023-04-28

Color: The color should be basically consistent with the selected sample or color board, the surface color of the product should be uniform, and there should be no obvious chromatic aberration.

Cleaning: The visible surface areas inside and outside of fiberglass products should be clean and free from stains, oil stains, and other pollutants that affect the appearance.

When spraying fiberglass sculpture products, it is necessary to have a good surface effect, and large and thick materials need to be roughly polished with an electric angle grinder and emery cloth wheel. Even if the surface of the mold is relatively smooth, it is still necessary to use a pneumatic grinder to grind coarse sandpaper, and then fill the defective areas with putty (Putty can fill the uneven and pitted surfaces of fiberglass materials, as well as enhance the adhesion of the paint surface. After spraying, the paint will not fall off).

Hand layup FRP is a glass fiber reinforced plastic sculpture product made by hand layer by layer, using a mixture of liquid epoxy resin and organic or inorganic materials as the matrix material and based on the prototype.  A series of process steps, such as manual pasting, edge cutting, sandpaper polishing, putty leveling after patching, spraying two coats of primer, atomic ash filling and leveling, and hand painting, are necessary to produce the product. The polishing process is one of the important factors affecting product quality, and the smoothness and flatness of polishing are also important factors determining product quality.

There are two commonly used polishing methods: Wet milling, using a diamond grinding disc with a water hole in the middle, made of diamond and epoxy resin molds, slightly more expensive than silicon carbide angle grinding discs; Another method is dry grinding, using sandpaper to gradually grind from 300 mesh, 600 mesh, 800 mesh, 1200 mesh, 1500 mesh, and 1800 mesh.