I can't solder/neither could the orig. plumber could he?

This is what the joints look like throughout my house....









Now I'm no better, how bad is this work? Some like the green one in first pic drip.

Here is a pic of the damage they've caused over the years....

Black pipe gas line...




Should that be replaced or what?
The original cold water supply to kitchen sink ran over that, i moved it a few inches to left.

My most recent work...




So i ask you, how many millimeters of solder do you "push" into a standard joint. Like 1 or 2, or like me a 1/2 inch hahahahah

I know why I use to much too. Cause I think too little I'll have to redo it all, too much it's ugly, but it holds.....

If I have a son next time, I'm going to make him solder a whole bunch until he uses so little you have to turn on the water to see if it's even soldered....

solder

My dad used to say, "You only start scrimping on solder and pipe dope, when you are nearing the end of the roll or can". In other words the amount you use is immaterial as long as you get a good joint. Sometimes I will apply the solder up to the point where the joint is cooling below the melting point, just to be sure it does not leak out and cause a bad joint.

focus on ...

i like this answer very much. Thank you, hj.

Good Rule of Thumb

This is the rule of thumb taught in plumbing trade schools across Canada: The length of solder used for a copper fitting should correspond to the size of the fitting. 1/2" joint gets 1/2" of solder. 3/4" fitting gets 3/4" of solder. And so on.