Not tried with all new cards, but with cards having already served, the operation is random, many jam When it works well, you must know that the cards are not properly mixed, but interspersed. (A map of the right package and a map of the left package and so on ...) It is therefore necessary several times, cut packets and re-mix, not to find the cards in series. The device works best for me, putting the cards' values in the air ", we all tend when it holds its cards in hand, bending slightly fanned When you put them in the back unit air, this curvature is a vacuum which prevents the wheels to drive the cards correctly. The construction seems slight, that will be the life of this mixer? ... But given the very competitive price, so do not expect anything other than a nice gadget that makes service!
