Impossible 3D Printed Bolt and Nut Toy

The toy they will ask about long after the party.

12k downloads in the maker community

$22.99

Color: Gray

Printed in the USA when you order.

1.You order it
2.We print it fresh
3.It ships to you

Nut slides freely on the bolt even though it looks trapped, so you get a real working puzzle that amazes friends
Features a hidden gap layer that lets you remove the nut from the bolt's head, so the magic trick never gets old
Print your own at home using the included STL file, so you can make as many as you want for gifts or collections

You hold a bolt and nut in your hands that seem impossible. The nut moves along the bolt's thread like it should be stuck forever. This 3D-printed puzzle works because of one clever trick: a tiny gap between the nut and bolt head that you cannot see.

The design comes from CreativeTools, made in the USA. When you print this, the gap creates a break in the layers. That break lets you slide the nut off the bolt's head, even though the thread looks complete. Disable the STL heal function on your printer so the gap stays in place during printing.

This toy teaches you how 3D printing can create moving parts in one piece. Show it to friends and watch them try to figure out how the nut got trapped on the bolt.