I never hear that word (spitznickel),but yes i use a electric stud welder gun.
were you first grind the damage area to bare metal. Insert stud welding tip.Insert stud and press gun against damage panel until ring touches.
Keep a firm contact between the gun and the bare metal.
then press the trigger for one half to one second,once I weld the stud,
I slip the puller slidehammer over welded stud and steady pull on handle
and tapping damaged area, this method will remove most dents.
to remove studs,snip cutters and grind off the remaining head.I love it !
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