re: Another box

Dorail123. 
Yes the strip is cut at 30 degrees on the table saw.  I used a stop clamped to the fence set to get half inch to cut each segment.  The stop is just used to slide the strip over for the next cut but stays in place well ahead of the blade, and leave plenty of room to clear cut off segments, I use a long pencil eraser end to move each piece away from the blade.  
Yes the pieces lined up along the square is  how I glued them and then clamped them .  I glued up three shorter sections then glued the three together, Just because of time to glue up a lot of pieces and keep them straight and flat. 
No jigs, that's just showing a protractor set at the correct angle and the remaining cutoff after cutting 30 degree segments.  

Be careful if your not experienced cutting small pieces with the table saw.  Keep fingers away from the blade!!!!  Do not trap pieces against a fence, be careful not to let pieces kick back.   Your projects show you have skills just be careful be safe!