Which method is recommended for applying thermoplastic powders to a surface?

Using an atomizer is recommended for applying thermoplastic powders to a surface because it allows for a fine mist distribution of the powder, ensuring an even and consistent coating. This method minimizes the risk of over-application and ensures that the powder can adhere uniformly to the surfaces being processed. Atomization helps in better penetration into the crevices or intricate areas of the surface, which can improve the chances of developing clear latent prints.

The other methods, such as brush application, direct pouring, or finger application, do not achieve the same level of precision and uniformity. A brush may push the powder into certain areas but can also disturb latent impressions, leading to potential distortion. Direct pouring can result in clumping or uneven distribution, which isn't ideal for capturing details. Finger application could transfer oils or contaminants, negatively impacting the quality of the prints being developed. Thus, the atomizer is the preferred method for its controlled application and effectiveness.