The issue of color film being gritty (Bittiness)

Color film uneven bead issue

The painted film has a bumpy texture with uneven appearance.

Causes

  • Dust, powder, and dirt particles sticking to the paint film
  • Using unclean brushes or rollers
  • Color residue mixed in the paint without proper stirring before application

Solutions

  • Allow the paint to dry completely, then sand the surface to a smooth finish. Clean the surface before repainting.
  • Use clean brushes or rollers for application, ensuring the paint does not contain dried color residue mixed in. Stir well before use.
  • If using paint that has been stored for a long time, use a drill mixer to blend it into a uniform consistency, ensuring no dried color particles are mixed in.