I have never planished. Planishing is over rated and over emphasized. It also may be mis-characterized as "relieving stresses" I am not buying thst story. Here is what some welding sites say.
"Planishing is a quick inexpensive means of reducing weld build up and improving surface finish. It is similar to a steel mill cold rolling operation only it is limited to the localized area of a weld."
Smashing a weld dot may streatch the dot thereby stretching the gap. If this helps a person fix something, then do it.
Last edited by bartamos; 02/14/2023 10:56 PM.