Occlusions are usually remedied by flushing the tube with tap water; kinking may need readjustment of the tubing.
Copper pipes are not flexible enough to bend without kinking, without the use of a pipe bending spring or pipe bender.
The step edges can play a large part in the surface dynamics of growth, and understanding the energetics of kinking is important.
While the engine in gear is coiling in its rope and drawing the plough towards itself, the rope of the other engine is paid out with merely so much drag on it as to keep it from kinking or getting ravelled on the drum.
