I need to weld the spring perches (as seen here, right above the spring):
Of course, the welder will be cranked up for big heat. I plan on having safety stuff (extinguishers, water) nearby and I'm going to drape a thick welding blanket over and around the tank itself.
Is there anything else I should do? Maybe a small fan blowing air away from the welding zone?
Regarding the welds itself, I plan on doing 4 crescent fillets (not all at once, in a few passes) around the perches themselves with a Millermatic 175. Do you think I need to preheat the tubes with a rosebud or not? I am leaning towards doing so.