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soldering

Soldering (US: ; UK: ) is a process in which two or more items are joined together by melting and putting a filler metal (solder) into the joint, the filler metal having a lower melting point than the adjoining metal. Unlike welding, soldering does not involve melting the work pieces. In brazing, the work piece metal also does not melt, but the filler metal is one that melts at a higher temperature than in soldering. In the past, nearly all solders contained lead, but environmental and health concerns have increasingly dictated use of lead-free alloys for electronics and plumbing purposes.

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  1. S

    Re-soldering a previously soldered joint

    I'm putting a new yorkshire fitting on the end of a pipe from which an old fitting has been removed. Do I need to remove all traces of old solder from the pipe end before applying the new fitting, or is it sufficient just to clean up the old solder coating in the same way as I would a 'bare'...
  2. R

    Water dribble when soldering

    I'm a complete notice and I working on my heatings motorised valves on my S plan system. I was modifying the system to add an arrester. Long story short, I made a bodge of the soldering due to persistent tiny water dribbling in the pipe being soldered which I overlooked despite the system being...
  3. M

    Is this copper soldering just ugly, problematic, or dangerous?

    Two pictures from a gas boiler install - is this dangerous, or just embarrassingly poor workmanship. What are the medium term implications of the joins like this? Do I need to get another plumber in to review and fix this? It is just shoddy but acceptable? Regards, Paul McGinnie
  4. D

    Soldering poorly fitting joint - pipe not round, good fill, how?

    Hi, Short version: I have about 4" of pipe sticking out of a concrete floor in a cupboard. It makes a 45-degree bend as it exists (bent, not with elbows), the last cm before the open end is pretty much straight, but as a result of the bend it is not perfectly round. I mean it is pretty much...
  5. R

    Best soldering flux?

    Any thoughts on best flux for potable water pipes?
  6. P

    AUS Soldering veiga fittings on gas

    Is there any clause that says I cant remove the rubber rind on a viega fitting and solder it on my domestic gas installation? Thanks
  7. J

    Outside tap soldering

    Hi all, keen DIYer here. Installing an outside tap and have tried soldering the joints leading from the 15mm copper pipe to the mains pipe. My question is a bit random but as I was soldering, the copper pipe going through the wall obviously got very hot, and got me thinking, could the heat...
  8. J

    No soldering in loft , any ideals

    I need to run new flow and returns in loft and soldering is out of the question,I will use copper as worried about plastic pipe but which is the best fitting compression, shark bite tectie classic or sprint or hep , not worried about cost ! Cheers Jason
  9. B

    Does 15mm copper have to reach right to the back of the fitting when soldering?

    I want to solder a 15mm end-feed elbow onto a straight run of pipe to join it up to a radiator. I've cut the existing pipe run just a fraction too short to come straight up to hit the radiator valve, but I'm hoping it could still work... How important is it that the copper pipe is pushed all...
  10. S

    Epic soldering failure on shower rough in valve, are inline shutoff valves the problem?

    Howdy I need to install a new rough in valve in my shower-bath. I bought a Delta 10000 UNBX and using the existing 1/2" copper piping was able to fit up the 2 inlets and pipe to the shower head and another to the tub, all 1/2 copper. The bathroom is on the ground level. In the basement right...
  11. D

    URGENT Flux which is shiny and not irriates the skin.

    A few weeks ago I found a flux with an engineer.It's not a typicall flux you can buy like powerflux for example.What is interesting, after soldering ,the joint looks very shiny.Also ,if your skin is sensitive doesn't irritates,moreover pipes and even hands are clean(not making green ) Any clues...
  12. L

    How to replace cold water supply line without using a torch or soldering any fittings.

    I would like to simply cut the flex copper pipe off just past the cut-off valve and attach a Shartbite male fitting or a compression fitting on the remaining copper stub which would be 7/8 inch in length after the cut. Would that meet code? Live in North Texas. Thanks, Don
  13. Scott_D

    Soldering mat??????????

    What’s the best soldering mat / heat proof mat available?
  14. OffshoreGas

    Soldering were pipework

    Is there a modern alternative to the old bread trick for soldering where you can’t get pipework completely dry? I’ve made a DIY version of a jet swet but it obviously only works on straight pipe sections.
  15. M

    Problem soldering Yorkshire 22mm to 3/4 coupler

    Hi, Im trying unsuccessfully to solder a 22mm to 3/4 yorkshire straight adapter. Ive done a fair bit of soldering before without issues but its all been on 15mm pipe. With Yorkshire fittings im used to seeing a ring of older appear after about 15 seconds and then stop. However with this...
  16. Roy_66

    Loo Cold Feed and Overflow Rework / Soldering Precuations (Part 2)

    Admins: Apologies: Can you please change post title to "Part 2" This post just for interest/comment so please only read if you have spare time. Following on from my Part 1: Loo Cold Feed and Overflow Rework / Dot Dab Drywall (Part 1) With all your help in the training (and lots of other stuff...
  17. M

    Fibre washers and soldering?

    Just curious to know how many of you guys are happy to solder whilst a fibre washer is in place? Or do you remove the washer first? Obviously I’m on about soldering quite closely to the fitting with fibre washer not like 4 metres away.
  18. Bogart

    Soldering mat differences

    Decided to push the boat out and buy a new soldering mat. Prices vary wildly from around£5 which is like my current one which has lasted me 10 yrs plus, only DIY use, up to one at nearly £30 made by Rothenberger is this price justified?
  19. Stanios

    Good soldering matt /alternatives

    Hi all, Are there any good matts or other alternatives to standard "monument" stuff? On my third matt while they do last about a year the biggest issue is they produce more smoke than the pipe being soldered! The smell is quite nasty too.
  20. H

    Soldering fixings to the side of pipes without t's

    Can anyone tell me what the name is for the process of soldering fittings to the wall of a pipe is like in the pic below? I remember seeing a video of someone making the holes for the fitting but can’t find it anymore and need to make a fitting like in the picture. Many thanks
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