Left Side Logs  
           
         
 
First log on the Side, lined up at the front and back
  
         
         
         
       
         
    The overlap on the Left Front is measured with a 3/8" Nub
         
         
       
         
 
Left Front Log, lined up with the Side
  
         
       
         
    The Side's Log overlaps to the front, use that Nub!
         
       
         
 
The third course is lined up front-and-back
  
         
       
         
    ... and the Front's log with a nub.
         
       
         
 
Back-and-forth, up the side