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Can You Solder Upside Down?

FAQs Jackson Bowman September 27, 2022

Capillary action is the basic principle that enables strong and clean solder joints for copper tubing. This action is caused by heat. It sucks the molten solder into the cavity between pipe and fitting from any direction, even upside down.

Can you solder upwards?

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Because molten solder is used to seal the joint, this means its bottom seam — where the bottom end of the tube enters the coupling — will receive the solder must be sucked vertically into the joint.

How do you solder overhead?

What should you not do when soldering?

How do you solder upright?

Can you remelt solder?

Try putting some fresh solder on the tip of the iron and see if that helps. Your new ground can be connected anywhere on the back of the pot. You can even just cut the old wire and lay the new one next to it if you are unable to get all the solder off.

Can you reheat a solder joint?

You can heat it up again and move it. You can paint a little flux on it first and slowly heat it. The problem with reheating a joint is that it gets too hot and ruins the solder seal. Pin one side so that once it moves, you can adjust it and quickly leave it alone.

Why does my solder not stick?

This problem is usually caused by the soldering iron being set to an incorrect temperature or the soldering iron itself having too low a wattage for the size of solder you are using. If you notice your solder not sticking, check your solder material and compare it to the wattage of your soldering iron.

How long after soldering can I turn water on?

If you followed these instructions, the connection is probably very tight. The only good way to test is to put pressure on the joint (turn the water up to the house). Be sure to wait for the solder to cool (2-3 minutes) before pressurizing the line to avoid cracking the solder due to a rapid temperature change.

Why does solder not stick to wire?

If you leave the solder on the iron, the flux will boil off quickly (the fumes are from the flux, not the lead). And without flux, soldering becomes almost impossible. Flux removes oxidation from metals, and it’s critical because solder doesn’t stick to oxidized metals and metals oxidize very quickly at soldering temperatures.

Can you use Vaseline as flux?

Can you use too much flux when soldering?

Although there is a sufficient amount of flux in the core of the solder wire to get your job done, technicians (to make their jobs easier) tend to use additional flux in the form of paste or liquid during the rework of the circuit board. The use of flux when soldering is not a problem.

Can you use too much solder?

If there is too much solder, a solder sucker or solder wick can help get rid of the excess. Prevention: Solder bridges most commonly form between connections with too much solder. Only use enough solder to make a good connection.

Can you damage a ball valve when soldering?

Ball valves are a persistent exception. Fortunately ball valves are not easily damaged by heat. Just be sure to open the valve and concentrate the heat on the connector ends of the valve body.

Can you solder pipes with water in them?

Do not attempt to solder pipes with water in them. When repairing or connecting to existing copper piping, it’s common to find a small amount of water in it, even after you’ve closed the valve and drained the pipes. Soldering a joint in pipes containing even small amounts of water is almost impossible.

Does flux go bad?

Flux cored solder wire has a limited shelf life determined by the alloy used in the wire. For alloys with more than 70% lead, the shelf life is two years from the date of manufacture. Other alloys have a shelf life of three years from the date of manufacture.

Why does old solder not melt?

Solder has a very low melting point (compared to other metals/alloys). Even a weak 40W iron should melt it almost instantly. If the solder doesn’t melt, the iron isn’t hot enough or even working. Try putting the tip through a piece of paper.

Does flux remove solder?

Its purpose is to remove oxides and contamination from the plate. The use of flux improves the strength of the solder joints. The main disadvantage of using flux is that it leaves a residue on the plates. These residues must be removed after soldering.

Do you need flux to desolder?

You must add your own flux when desoldering. Fluxless wicks have a part number starting with 1830 through 1833.

How can you tell if a solder joint is good?

A good solder joint should have an even solder strip that is visible from all sides. If you see an area that looks like it needs more solder, brush a little flux onto the joint. If the joint is still warm, the flux will melt and flow into the cavity. Then reheat the connection and re-solder.

References:

  1. https://www.ehow.com/how_8411892_make-solder-flow-upwards.html
  2. https://www.youtube.com/watch?v=NQmWLr1qBsM
  3. https://safety.eng.cam.ac.uk/safe-working/copy_of_soldering-safety
  4. https://www.youtube.com/watch?v=-tC8gB5qQig
  5. https://www.ultimate-guitar.com/forum/showthread.php?t=1279177
  6. https://homedistiller.org/forum/viewtopic.php?t=31444
  7. https://www.gordakelec.com/news/five-reasons-your-solder-wont-stick.html
  8. https://www.oneprojectcloser.com/how-to-sweat-solder-copper-water-pipes-for-a-watertight-seal/
  9. https://www.instructables.com/How-to-Solder-Videos:-Why-is-soldering-difficult-s/
  10. https://www.youtube.com/watch?v=ajr2qYPZwso
  11. https://www.linkedin.com/pulse/bad-soldering-practice-why-you-need-remove-solder-flux-nachankar
  12. https://learn.adafruit.com/adafruit-guide-excellent-soldering/common-problems
  13. https://www.familyhandyman.com/project/soldering-tips/
  14. https://www.familyhandyman.com/project/soldering-copper-pipe/
  15. https://www.evilmadscientist.com/2013/solder-expire/
  16. https://community.spiceworks.com/topic/357013-solder-is-not-melting
  17. https://www.conro.com/how-do-i-remove-flux-after-soldering-the-pcb-board/
  18. https://www.techspray.com/desoldering-how-to-guide
  19. https://www.familyhandyman.com/project/how-to-solder-copper-pipe-joints/

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