Originally Posted by
cmulder
It might work if you spotweld all around the circumference. But it probably won't be strong enough to spotweld the two parts of the cap.
FWIW: I have done a few caps with the soldering method, and in one case the two parts of the cap came apart, immediately leading to A) lots of radio interference, and B) me getting hit with the HV pulses when I felt the head for temperature...