I'm using oxy/acet, #2 tip, about 2-3 PSI, neutral to slightly reducing flame and Sil Fos 15.
Is this configuration about right for 3/4" connections?
Do you like to start at the bottom of the joint and work your way to the top or vice versa.
I know Sil Fos on copper to copper doesn't require a flux. However can flux be used? (ie in order to better gauge temperature of the joint). Will flux help achieve better joints?
Do you like to aim the torch flame towards the pipe end or the fitting end as your sweeping back and forth? Or do you aim it perpendicular to the axis of the pipe? Or do you like to heat the joint by going up and down or figure 8?.
Do you actually touch to inner cone of the flame tip to the fitting or do you back it away a little bit to reduce any chance of burn thru?
I'm using Sil Fos 15 ribbon filler. Would round work better? What diameter?