Product review (5 stars): Amazing machine
Amazing machine.  It does take a bit of adjustment to get the blade precisely where you want it based on how you like your shaved ice.  There are many adjustments you can make to get it dialed it perfect.  I found that a 1 gallon plastic paint bucket from your local hardware store filled about 1/3 full makes the perfect size ice block.  Put the ice block in, push the foot pedal, and the machine does the rest.