less preheating flame
impure cutting oxygen
too slow cutting speed
smaller size cutting nozzle
thickness of metal to be cut
purity of oxygen
duration of cut
type of cutting blowpipe
Input amperage
Output amperage
Open circuit voltage
Closed circuit voltage
Salt Water
Soap Water
Hard Water
Fresh Water
Per-heat the solder
Clean the bit thoroughly
Change the soldering bit shape
Rub the bit over solder for longer period