Many Explatives Later - Lesson #1

OK, I am working on the side tables. I picked up a Circular Saw @ Sears. Good price, of course it went on sale the next day for $30. So, I'll have to go back to get the $10 back.  So I looked up on-line how to make straight cuts. Easy right?  Just measure the distance from the cut to the edge of the base plate, line up a carpenters square on the line, cut away. Except I didn't account for the width of the blade. See my handy dandy diagram. So, this first table has a few gaps. Learned a lesson. Move on.