Cube dissolve
gonna be honest was messing with modifiers and wasnt expecting that little shake as it dissolved but liked the look

Cool effect

cool ! Build modifier?

No although u might be able to do the same thing with build. and have it be easier to do

Wat I did was use a procedural made texture to control a vertex weight edit then a mask to remove those vertices, then wireframe and smooth modifier to finetune the look. I just really wanted to mess with a lot of modifiers