Solderd fitting looks crack on front

[Mgrant]

Hi do you do sometimes find even though your sure the solder has run around a fitting the ring you see at the front lip of the fitting and the pipe can occasionally look cracked on one place?

 

[ShaunCorbs]

a black spot/line ? normally down to what flux you use/ impurities

 

[JCplumb]

I was getting similar when my flame was too hot, the flux burned before the solder melted, gave me some scruffy joints but still held OK.

 

[Mgrant]

Black line like the solder hasn't taken between the pipe and lip of the fitting

 

[Mgrant]

tried to upload a pic but it doesn't seem to want to let me

 

[Mgrant]

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[Mgrant]

Left hand side near the bottom looks to be a hole in the solder?

 

[REDSAW]

looks like the heat has been held on the left fitting too long drawing the solder down.
am i to presume you soldered that end last?

 

[Mgrant]

yes I soldered the end with the black line/ hole in it last, Does it need re- doing then?

 

[REDSAW]

nah, never had a joint leak yet that i soldered and that includes ones like in pic.
as long as its fluxed 100% and enough solder its done.

 

[Mgrant]

Thanks so even with the little gap were it appears to be missing solder between the pipe and the fitting it should be ok as it will have run lower down in the fitting?

 

[lame plumber]

try a bit less heat, use a propane bottle if you are using mixed gas bottle for a while.

 

[Mgrant]

Thanks could I be best cutting out and starting again?

 

[plumben]

Ive had this a few times, and have never had a leak from a fitting that looks like this, I just count it as one of my fittings I'm not happy with and usually check it first upon filling the system

 

[Mgrant]

Ive had this a few times, and have never had a leak from a fitting that looks like this, I just count it as one of my fittings I'm not happy with and usually check it first upon filling the system

And is it from too much heat?