Epoxy resins are systems that dry by exothermic reaction typing. This type of reaction is defined as the generation of heat in the system, and the heat produced by the system is variable. These variables are; product types, application thicknesses and differences in ambient temperatures can be defined in general terms.

The expression that is meant to be stated when talking about large volume resins includes resins that can be poured thicker than 2 cm based on the thickness measure to be applied. What is meant to be specified in the expression of small volume includes epoxy resins with a casting thickness of up to 2 cm at most. While determining the volume expression, all ambient conditions were considered constant and the naming was done by emphasizing the application thickness.

The change in ambient temperature, which is one of the other variables in the reaction process of epoxy systems, and contractions in the volume to be cast will cause a direct change on the thickness. In such cases, in order to determine the most suitable thickness for use, you will need to make several different trials according to your ambient conditions and casting volume and determine the optimum casting level and which type of resin you should use.