This technique is very ancient. It is to create a grid that forms gradients. Lighter areas will have a greater distance between the lines. Darker areas will be thicker. You have to be very careful because a clear part of it can be darkened by increasing the lines. From the dark parts it is very difficult to go back. Even by covering the ink with acrylic paint to correct, it will tend to re-emerge.Patterns can be of many types. I personally use three of them. They are the most classic.
- Obliques. The lines intersect, forming open angles greater than 90 degrees.
- Orthogonal. The lines intersect forming angles of 90 degrees.
- Curved. The lines are curved, parallel, and intersect as in the first case.
