What Causes Rough and Grainy Paint Finish?

[SanOlive]

That's due to poor craftsmanship. The wood surface should be repeatedly sanded with wood sandpaper to remove burrs and achieve smoothness. Residual glue at wall joints and other bonded areas should be scraped off with a putty knife or finely sanded. If there are color spots or uneven color distribution on the surface, the wood should undergo a pre-bleaching treatment to ensure uniform coloration. Detailed explanations are as follows: 1. Repeated Coating: Metal components must have dust, oil stains, welding slag, and rust thoroughly removed from their surfaces before applying rust-proof paint. Unless otherwise specified in blueprints, apply at least two coats. 2. Paint Selection: Choosing a pneumatic paint mixer requires considering multiple factors including power type, applicable materials, layout form, processing capacity range per batch, mixer type, material category, application fields, mixing method, and pneumatic power. Applicable materials include liquids, paints, chemicals, food products, adhesives, inks, etc. Application fields cover chemicals, construction engineering, food, pharmaceuticals, paper industry, etc. Layout forms include horizontal, vertical, cycloidal, and coaxial configurations.