[sn0border88]

Spray transfer had been around for over 20 years and we all started asking.... What about pulse transfer?? It will be another 10 or 20 years before they will recognise pulse transfer as a prequalified process. .

That's been the subject of interesting debate recently, the main point that being is that the mode of transfer isn't being changed (pulsed spray is still spray transfer), its the waveform. Since the waveform isn't an essential variable, it should not require re-qualification.