Product review (4 stars): A workhorse of an ice maker
It will work constantly as long as you feed it H2O.  Yes it have different size, but it does take a full try of ice to get that size you want.  While the inside of this icebox is insulated it is not well enough to keep the ice frozen.  Yet if left on overnight, the ice inside will melt and it will start the process all over again.  Woth the cost.