What does angle mean when regarding halftones?Updated a year ago

The angle of halftones refers to the slight rotation that the dot grid takes. This may sound confusing at first, so let’s break it down. 

Dots that fall at right angles on the screen (0°, 90°, 180°, and 270°) will line up with the threads of the mesh and won’t be printable. Angles at 45° will hit the knuckles of the mesh diagonally. You’ll lose much detail when using a 45° angle. 

For best results, use an angle that bisects the mesh so the dots miss as many threads and knuckles as possible. A good rule of thumb is to use 22.5° angles. This way, the dots aren’t falling on the threads or knuckles of the mesh, but between them.