And, the ambient temperature with pitch, and in the long resting period may cause some surprises. There are those who leave the tool on the film with the garnished pitch of a brushstroke of cerium oxide, but it is not a good rule.
The best adaptation occurs only when it is done just before the start of work, then at an ambient temperature can allow that in those few minutes of manual pressure. But this, It is not a mandatory behavior, if not in phase parabolizzazione.