3DGloop

3DGloop was initially a kickstarter project with great success!

3D Gloop! is a specially formulated adhesive designed for the plastics used by 3D printers.

Okay, so we'll just say it... 3D Gloop! is without doubt the best glue for holding your ABS, PLA and PETG 3D prints together.
No messy epoxies or super glues and activators that don't work anymore.
With 3D Gloop! you get the strongest and most reliable adhesion compared to any other adhesive on the market!

3D Gloop! is without doubt the best glue for PLA 3D prints. Don't take our word for it! See what some of the popular YouTube makers think!

The outer layer of the PLA/ABS or PETG is liquefied again chemically so that the two items are effectively fused together.
The same product can also be used to smooth the surface of your objects, or to create a putty as an adhesive for the first layer on your print bed.
https://www.3dgloop.com/