Hi all I hope this is in the right place, I am really looking for pointers about spray transfer rather than SIP specific info. I have done lots of mods to my SIP 140, it is now welding reliably and well, so I have been practising and improving my welding. I have been doing lots of reading and watching on Spray Transfer versus other types of mig. I can get a lovely Spray transfer weld on horizontal welds. My question is about settings, I think I am over thinking slightly and getting confused. My SIP is now running a 24v wire feed PSU and one of the aftermarket motor/gearboxes that are on fleecebay. So I have variable wire speed and 5 power settings. Is there an easy way to measure or work out the voltage that relates to each numerical setting on the rotary power switch? I have been watching videos that talk about certain voltages for certain thickness's. I know the basics, if I make a hole it is too hot etc, but I am looking for some reference points, and I would like to start jobs without having to experiment too much to find the right settings. SO this brings me to my second question. I want to be able to switch between spray transfer and SC and have an idea what settings to aim for. I am getting spray transfer with the wire on lowest possible setting for lowest power setting, and then a tiny increase as power goes up, so even on highest voltage, I am still only welding on speed about 10%. If I then want to weld vertical, I have no idea what wire speed to start with. Have I got my head round the basic idea properly? Spray transfer is lowering the wire speed, effectively upping the current till the wire vaporises as it enters the weld pool, so to switch back to 'normal' welding I need quite a jump in wire speed. I have been a bit stumped by changing from a 20v PSU to 24v when I changed the motor and gearbox as I was struggling to get enough wire speed before and I didn't like running at 95% wire speed on full power as I was left with very little adjustment if needed. (possibly not helped by the previous motor burning out). Anyway, any pointers would be appreciated.