Changes

'''Glue''' is a sticky substance designed to attach one object to another. It can be made from natural substances, but these days is more likely to be [[synthetic]]. The first glue was made some time around 7000 years ago, by the Sumerians.

'''Glue''' is a sticky substance designed to attach one object to another. It can be made from natural substances, but these days is more likely to be [[synthetic]]. Glues have gotten so strong that some [[airplane]]s have their wings completely or partially stuck together with high-strength glues, such as the [[composite]] wings introduced to the [[A-6 Intruder]] in the SWIP upgrade. Glue was invented by the Sumerians.

[[category:Tools]]

[[category:Tools]]