Cardboard Cutter - Open Packages

I designed this cardboard cutter to the shape of my hand so that it is as comfortable as possible.It can easily cut any type of cardboard up to 5mm thick without cutting what is inside.Since it does not have a blade, it does not cut hands and is safe for use by children.I also tried it to cut packing tape and it works perfectly.Convenient, practical and safe, I have been using it for some time now to open any type of box without risking ruining what is inside.30gr of filament for this very useful object for everyday life… I hope you like it :) Boost MeBoost is FREE for You but AWSOME for ME.What a strange society today, You can pay me for my work without spending a single dollar.