During wet sanding, what should be monitored constantly for best results?

Monitoring water flow and cleanliness during wet sanding is crucial for achieving the best results. During this process, water serves multiple purposes: it lubricates the surface, prevents the sandpaper from clogging, and helps wash away debris generated from the sanding. If the water flow is inadequate, it could lead to poor sanding performance and potentially damage the paint layer being worked on. Cleanliness of the water is equally important, as dirty water can introduce contaminants back onto the surface and cause scratches or imperfections.

Proper water flow ensures that the sanding operation remains smooth and efficient, allowing for even abrasion of the paint surface. Additionally, maintaining clean water prevents the possibility of embedding particles into the paint, which could result in a lower quality finish. Therefore, monitoring water flow and cleanliness is essential for achieving a uniform and high-quality surface when performing wet sanding.