Hello there! I am trying to get some results with filletings having variable radius but I still did not understand the logic behind the process. There are very few videos in the web related to the topic. Are there any other learning resources about it? For example, how do we achieve a filleting on a straight corner line -say on a cube- which begins with a large radius and ends in a narrow one? If someone puts some visual explanation it will be appreciated highly, really.

Thanks in advance for any help!