Is anybody familiar with "gluing" on patch panels?

some guys use a air operated stepper tool it pinches a lip or a fold in both one panel,,so when you mate the other panel it is flush,then stich weld it,, and because one of the panels are stepped and flush thee wont be as much filler needed to smooth it out,,seems like a much better way for a novice,,
just thought ide add my 2 cents,,,