the dies stay in place really well. The only down side is they cannot be used with a prestamped image that you are trying to cut out–like for instance the new Hero Arts stamp and dies sets. Once you stamp the image it needs to be turned over to cut–so you cannot see to place it on the die — my recommendation is to cut and then stamp for those particulars dies.
Lay the dies like this–horizontally–not like this below
they tend to shift–you will feel the pull of the magnets and your dies will not stay where you place them.
This is what you end up with after the cut~(run through your die cut machine–like a Sizzix Big Shot)
The hardest part is getting them exactly even inside each other–you have to eyeball it. All in all it is a pretty neat tool and I am glad I purchased it. It was a bit pricey at $49.95–but you do get this die set with it, so that helps a bit 🙂
Happy nesting and cutting!