Flux inside or outside capillary end feed?

[John_]

I know this is prob personal habit but when soldering which is better - flux inside or outside, i.e female end or male end?

 

[gavinwilson]

on the pipe

 

[mikegas]

The correct way is to apply the flux to the pipe not the fitting

 

[Hardy1]

flux goes onto the pipe not the fitting..

 

[PlumbBobBob]

on the pipe so male end

 

[Best]

Yes, - on the pipe, & then you won't fill inside of joint with flux, but you can put a light film of flux inside fitting if you want. Turn the fitting or pipe when pushing together, if you can, to aid even spread of flux.

 

[Gray0689]

I'm on pipe and fitting

 

[Best]

I'm on pipe and fitting

Me also, to be honest. Flux will melt & go inside pipe anyhow, no matter what you do.

 

[John_]

Thx guys, had a debate with an engineer who flux inside which I thought a bit unusual but now I know who's right. Initially I thought personal taste but now I know which side I am on. Thx.

 

[Roger Welton]

Outside pipe on smaller pipe, 28 and above both. Not quite sure why but have always done this.