The Bondic Principles: Bondic works best on rough surfaces and even better with undercuts. Bondic solidifies only by exposure to UV light (LED included) and works best in layers (the maximum thickness of one layer is 1- 1.5 mm). Bondic works best when the surface is clean with no grease. Bondic has no solvents, which is one reason why it doesn't dry out. Bondic is a liquid plastic welder that should be used with the principle of welding and not gluing. <p> Bondic is the world's first liquid plastic welding tool. It's not a glue, so don't use it as one. It's the ONLY product that works where glue fails and never dries until you want it to. Simply squeeze out the desired amount and use the UV LED Light to cure it in 4 seconds and it's done - the world's fastest drying bond. Bondic is both heat and water resistant, as well as resistant to acids, oils, lyles, and lubricants. <p> The uses for Bondic are endless: Replace and restore substances (reparation). Setting elements and objects (temporarily or permanently). Control over adhesive strength on different surfaces. Joining objects by integrating undercuts in the construction. Filling and Sealing. Mold Making. Bondic can be molded, milled, filed, painted, polished and sanded, so you can customize any repair. Bondic is lightweight, portable, and can easily fit in your pocket, so you can take it on the go. Bondic fixes the broken pieces of the world, one bond at a time. <p> DETAILS: Includes five (5) Bondic Replacement Liquid Cartridges. Bondic Welder Tool not included