Filtering paint before pouring it into the spray gun cup is a simple step that prevents many coating defects. Graded filter paper helps control particle size, protect fluid passages, stabilize spray patterns, and reduce rework. This article explains how professionals choose and use filters in automotive refinishing.

Fresh automotive coatings are vulnerable to dust because the wet film remains open while solvents flash and the surface levels. Dust can come from booth filters, clothing, masking paper, compressed air, panel gaps, or poor cleaning routines. This guide explains how professionals reduce dust nibs before, during, and after spraying.

Backflow in spray gun paint pipelines is not just a small inconvenience. It can contaminate fresh paint, disturb fluid delivery, create bubbles, and cause unstable atomization. This professional guide explains how to diagnose and solve backflow from the gun body, cup system, hose connection, and fluid passage step by step.