All you need for sure adhesion of 3D prints 

Magigoo is an easy to use 3D printing adhesive designed to address the 'first layer not sticking' problem: Magigoo ensures a strong adhesion to the heated bed plate.

But the magic starts when printing is ready: just wait for the plate to cool down and then remove your prints with just a finger flick! In addition, Magigoo helps to prevent warping by ensuring the base of each print remains firmly attached to the print bed.

Magigoo comes in a variety of specially formulated varieties to ensure that you have exactly the adhesion you need, whatever material you are printing with. You can also save by buying a starter kit that covers the most common materials.