What is used to indicate the beginning of the curing process in resin?

The beginning of the curing process in resin is indicated by gel-time. Gel-time refers to the specific period during which the resin transitions from a liquid state to a solid state, marking the initial stage of curing. This is a crucial phase because it delineates when the resin has reached a consistency that can no longer be poured or worked with easily, but is not yet fully cured.

During gel-time, the chemical reactions within the resin begin to take place, leading to the hardening of the material. This timing is essential for manufacturers and craftsmen to understand, as it influences how long the resin remains workable before it sets. The gel-time allows for the addition of other materials or components before the resin hardens, ensuring optimal bonding and performance.

The other terms mentioned, while related to the curing process, focus on different aspects. Setting time refers to the total time taken for the resin to fully solidify, not just the initial gel phase. Pot life refers to the maximum time the mixed resin can be stored before it begins to cure, which may not be reflective of the gel-time. Varnishing is a finishing process that is applied after curing and does not influence the curing process itself.