First attempt at laser cutting the cube!

Here is my first attempt at laser cutting the cube.  Unfortunately it didn't go as well as I hoped.  Apparently the chip board I used is a little smaller than 1/16th of an inch, so it is too small for the notches that I cut and my pieces just fall apart! I think I'm going to make each of the notches smaller in rhino and just cut the vertical ribs again.  But if anyone has better suggestions that would be great!