We had an incompetent Rainsoft installer over at our house who apparently did not flush the flux out of the system properly. We ended up getting it in our kitchen sink and bathtubs. How can we make sure it's all gone from our pipes and what should would use to properly clean our sink and tubs? We'd...

Hi We just had some new copper installed in the basement for a second bathroom. Our guy tied into the existing lines and used a non lead solder. Now my cold water tap in the upper bathroom (which I can see has been soldered to accommodate the basement piping) has a very strong flux/solder taste and...

If a magnetic flux passes through a circular coil when its diameter is D, what should be its diameter (in terms of D) so that only half as much flux passes through it in the same field? Assume that the magnetic field is uniform over the area in both cases.

Hi all, What type of flux is recommended for soldering copper pipes? I learned to solder quite a while ago and have since then piped a residential kitchen, and an entire commercial kitchen at a local take-out food store (two double sinks, two custom-made over-the-stove ½" pot fillers, and...