11. After letting the bleed water soak into the hardener you float and trowel it in. 12. Epoxy adhesives come in two tubes _ one containing a resin and one containing a hardener . 13. _Epoxy : This type of glue comes in two parts, a resin and a hardener . 14. You broadcast the hardener on the concrete as soon as it is floated for the first time. 15. The second of the essential ingredients of an advanced composite system is the curing agent or hardener . 16. Once the nodes are filled, the object can be solidified with a hardener such as epoxy resin. 17. The color hardener can be applied using one of two procedures; integral color or cast-on color. 18. Vinegar is an excellent solvent for cleaning epoxy resin and hardener , even after the epoxy has begun to harden. 19. The composite metal consists of two ( waterbased binder ) or three different ingredients : metal powder, binder and hardener . 20. Concrete can be colored in many ways; color hardener , integral liquid or powder, acid stains to name a few.