Noun
One who, or that which, hardens; specif., one who tempers tools.
Source: Webster's dictionaryMedium viscosity, light colored fast-setting modified amine epoxy hardener. Source: Internet
It comes with a syringe that is very easy to use for it dispenses the glue evenly and has separated containers of epoxy mastic and hardener to keep the glue from drying up. Source: Internet
Best is to use a 31 screen for good coverage and hardener on the screen so the film doesn't break up when abrasing against the shadecloth. Source: Internet
Can be used as a hardener in two component semi-rigid and flexible systems. Source: Internet