Do you mean actual hours or days/weeks/months?

I've often been asked how many hours one of my builds take.  Impossible to say as its the sum of many short sessions, some of which overlap with other things (example sometimes I tinker with a part while partially paying attention to the TV or a conversation with others).  Best guess I can make is 60 hours or so.

A couple years ago I was doing what I consider intense modeling, finishing four kits in a year.  Lately other things have pulled at my time and I'm barely finishing one or two.