Term used to describe the point at which a thread wrap finish is no longer tacky to the touch. The point at which foreign objects or dust making incidental contact will not adhere.
A film is considered tack-free when the finger, with a slight pressure, will not leave a mark. The surface will not be sticky.
That condition when a film of finishing material has reached the point that the surface can be touched lightly without a sensation of stickiness.
Time in the drying of a paint film where it is not sticky but not completely cured.