Set time just means the time that it typically takes for the solvents in the wax to evaporate enough for the wax to have a bond with the surface. But this timeframe doesn't necessarily correspond with the time required for all of them to diminish enough for you to apply another coat.
Zymol wants you to let the wax sweat for 24 hours because that is a standard amount of time that they know will be enough for all the solvents in the wax to fully evaporate. The use of the cold water in between the layers is basically to help shock the wax into curing more quickly. The cold temperature helps to make the first layer bond hard with the surface once the solvents are gone, which is why you want to do it before applying another layer. You want to make sure it is truly bonded so the new solvents in the second layer don't help to pull up the first layer.
|