Wanhao Duplicator 7 Mask Creation Toolset

One of the issues people are encountering when printing using an LCD-based 3D printer, such as Wanhao Duplicator 7, is the need for a mask, if the entire build plate area is to be used. This is because no matter of light source is used, there are differences in light intensity across the printing area. If these are not compensated for, there may be issues with the print, like over or under exposure, or worse the print may fail at all.
For compensation a mask is to be used. A mask is an image, o