i know keeping your knives very sharp helps. they won't slip off the food as easily.

have you tried any of the wider grip knives? i have a Salad Shooter. it grates and makes nice thin slices. easy clean up too.

a bit more expensive...but many of the small chopped frozen vegies are a time saver. errrr...finger saver....like frozen chopped onions.

so far those smash down food slicers/choppers/dicers have been a bust for me. hubby...mr buy from infomercials...bought one that was huge. so many attachments it took up a full cupboard. what a mess to clean.