I tend to mostly cut as I go because my quilts have a tendency to evolve into something other than my original idea as I get going on them and discover I really need a lighter color here or that arrangement doesn't look like I expected or whatever. Just part of the creative process for me. That way I don't end up with a couple dozen or more squares or triangles of a size that is no longer the size I need because I changed my mind on what I was doing.