How To Solder Copper Pipe With Water In It: DIY Soldering Hacks

Are you one of the folks who don’t know how to solder copper pipe with water in it? To achieve this seemingly hard task, you require to have the right tools and some know-how.

Don’t worry if you are hearing this for the first time since this blog post will give you the right insights on how to achieve this task. Copper pipes are vital for delivering water and are also susceptible to flaws that happen inside them.

Soldering them helps to remove the defects and make them functional and brand new. Also, since copper pipes come in different diameter sizes, it’s crucial to get the right info for soldering and cutting the different kinds.

All in all, we can attest and promise it’s super easy to solder the different diameter sized copper pipes. Our factual review post is what you have been lacking and there is no reason for you to worry anymore. 

Let’s reveal to you some insights regarding soldering copper pipes with water in them. Thank us later!

How To Solder Copper Pipe With Water In It

To achieve this process, it’s crucial to be armed with the right tools. Lack of proper tools will make the whole process cumbersome. If you have the right insights required to ensure the soldering process is best, it’s possible to accomplish this task.

Here are some proven insights that make it possible to solder copper pipe with water in it. Let’s take a look at the process involved.

Preparations Before Soldering

Thoroughly clean all parts of the copper pipe that will be soldered. Proceed to deburr the inside part of the copper material and ensure that the diameter of the pipe is not altered.

To ream the inside part of the copper pipe it’s wise to utilize a convenient tool like the wire brushes. Also, you can use sandpaper to clean the outside part of the copper pipe.

Use Damp Rags to Protect Joints

When soldering, a damp rag is vital. First, it helps acts as a flame protection tool and secondly as a good heat absorber. Start by dampening the rag before you run it around the copper pipe. Importantly, it’s crucial to recognize that the dampened rag acts as a coolant as well as protecting the solder from melting.

Use a Brush for Fluxing the Copper Pipe

Once all portions are prepped, apply a fine layer of flux by using a brush tool. Just a small content of the soldering paste will protect and keep everything fitted on the copper pipe surface.

By functionality, the soldering process helps to optimize the filler accessory to the capillary mode during the heating process. Also, it’s prudent to recognize the flux used aids in deterring oxidation prevalent with the copper material.

Best Soldering Temperature Range

Setting the right temperature for your soldering copper is crucial to get quality results. Harness the right wattage for exceptional soldering. One thing prevalent, wattage is related to the set temperature range. If you have a bigger copper pipe you will need to utilize extreme heat.

First, before you can start soldering your copper pipe it’s wise to consider its size. In case you have a 1/2 inch iron pipe, it will require less heat compared to using a ¾ inch iron pipe. For top-notch soldering results, the best fuel to utilize is propane since it produces heat that reaches 3500 F.

Also, in terms of heat, the more extreme temperatures determine how fast it’s released from the tip of the iron. In most normal conditions, a 40W affiliated device will produce around 810 F of heat while a smaller device of 15W will generate around 600 F.

Most experts recommend the ideal temperature range for soldering to be around 750 to 800 F. Taking a much less temperature range for soldering will mean that you will need to be patient and relax while the soldering work becomes completed.

Sweating the Copper Pipe

If your copper pipe is for delivering potable affiliated water, it’s recommended to use lead-free solders. Lead-free solders are those that have a code detailing at “50/50”. To start soldering, lit the propane device torch and direct its tip to the area you want to solder.

Place the device torch on the soldering area for about 5-6 seconds for the solder to spread evenly. For even distribution of heat and solder, repeat the above-mentioned procedure to the opposite part of the copper pipe.

For beginners, start by placing the soldering wire and check if it’s melting. If it’s melting, you can work on the real copper pipe soldering.

Before directing the fitting of the pipe, it’s wise to assemble it. Do so while the copper pipe is still hot and proceed to insert the ½ inch or ¾ inch into the joint. Importantly, don’t forget to ensure that all excess soldering flux is removed by using a dampener.

Finally Check and Testing for Potential Leaks

Lastly, check if the joint made is strong. Also, it’s wise to recognize if you need to use some flux to fill the joint. If so, solder the joint by impacting some heat on it.

When the temperature cools off, conduct a test on the soldered joint by running water on it. Passing water is the only sure way to ensure there are no leaks on the soldered copper pipe.

Have you now seen it’s easy to solder a copper pipe with water in it? In case you are faced with flaws in the kitchen, bathroom or other area, it’s possible to achieve this task. With just a little patience and know-how flaws apparent with water pipes are eliminated fast.

Required tools

Before you can start to solder copper pipe with water in it, it’s wise to be devised with the necessary tools. Let’s look at some required tools.

A hacksaw

The hacksaw is a cheap must-have tool that will ensure that copper pipe is cut with less effort. If you lack one, you can buy from a mechanical shop accessory seller or hire one.

Cleaning Cloth

Cleaning cloth helps to eliminate excess accumulated solder on the made joint. Use a thick-made cloth material to get the best cleaning results.

A marker

The marker helps to reveal the area where the cutting will be made. Lack of using a marker will lead to an irregular copper cut.

A supporter tool

When cutting, the copper pipe will move in the direction of cutting. To avoid this, use a supporting tool to anchor conveniently the copper pipe.

With all these tools, it should be simple and much faster for you to solder using copper.

Learn more: How to Fix a Broken Wire Without Soldering

How to Cut Copper Pipe for Soldering

Knowing how to solder copper pipes is vital. But in case you make a mistake, cutting the copper pipe for soldering becomes cumbersome. Also, there can be some water remaining in the pipe making it wise to have a convenient method to cut the copper paper.

When cutting the copper pipe it needs to be hot also. In this review section, we are going to check the process of cutting copper pipes for soldering. After reading this part, you will better know how to solder copper pipe with water in it?

Utilizing a Pipe Cutter

A pipe cutter is an ideal tool for cutting copper pipe. A pipe cutter is hassle-free to use and if you lack this tool, you can buy one from the Amazon website. If you are using a small in diameter copper pipe, you can use another method which we will describe in later stages.

Step 1

Start by positioning the copper pipe on the pipe cutter. Next, make the blade to the convenient range and avoid doing it excessively since this will make the blade bend.

Step 2

After you’ve achieved the snug, proceed to make a few turns until the device grasps. Proceed by removing the copper pipe to scan for the circumference groove.

Step 3

Install the pipe to the pipe cutter until the groove is in positional across the blade. Ensure it tightened till it snugs enough.

Step 4

Lastly, slide the pipe until the cut is made.

Once you have cut, it’s crucial to ensure that all burrs are eliminated. Removing the burrs will inhibit the passing of water. If you lack a convenient tool to eliminate the burr you can utilize a round file.

Utilizing a Hacksaw

Hacksaws are ideal if you are working on non-plumbing works. Also, they are compatible with works that are hard for other cutting tools to reach.

Although the hacksaw does prudent work, it can be cumbersome in case you lack a holding tool. Even though you might the strongest of the people, a hacksaw is trick to use.

Take precaution if you are working on plumbing works since excess sawing can disconnect the joint. If you want to cut copper pipes situated on plumbing works, then use a slight force. After finishing cutting the copper pipe, use a file to brush off the remaining burrs.

Utilizing an Auto-cut Slicer

A piper slicer is a blade with a spring. When using it, you only require to slip the pipe and this helps to determine the best tightening range. Twist the pipe until you get the best grip and ensure its cut in the right manner. Lastly, ensure that all left burrs are removed.

Cutting copper pipe is not cumbersome like most people assume. All these methods mentioned are great for cutting the copper pipe.

Some FAQ’s Related to Copper Soldering

In this section, we are going to take a look at some commonly asked online questions pertaining copper soldering. Information revealed here helps you to know some common problems and solutions about soldering copper.

Below are common online asked questions about copper soldering:

Q: What is the benefit of using a flux when soldering copper?

Ans: Flux is an important aspect when it comes to soldering copper. Some notable benefits of using flux include:

  • The flux helps to prevent copper oxidation when seconding heat
  • Flux helps to eliminate oxide surface film

Q: Does the type of flux matter when soldering copper?

Ans: Usually, there are different types of flux products with each being specific to the type of material to be soldered. An acid affiliated flux is best for use in copper soldering.

Q: How can I better maintain my copper from wearing out?

Ans: Copper is a fragile metal and it wears out easily if not maintained well. Some common ways of preventing copper wear out include:

  • Tin the soldering copper to eliminate instances of tip damage.
  • Go for forged copper and shun away from bar affiliated copper.
  • Coat the tips of the copper solder to increase the durability of the tip.

Q: Is cleaning copper that important like recommended by experts?

ANS: Yes. Cleaning the soldering copper is important. First, cleaning helps to remove harmful oxides and failure to clean will lead to poor anchored joints. To clean, use sand affiliated clothe and lightly go through the cleaning process.

Q: Can I solder copper on solely?

ANS: You can. Soldering copper is not cumbersome and it’s a task you can do alone. If you have doubts, it’s wise to hire a soldering expert though you will incur costs.

Q: What are some properties of copper that make it great for soldering?

ANS: Copper is one of the commonly used metals when soldering. Notable features that make it great for soldering include:

  • Copper doesn’t oxidize fast like aluminum and other soldering metals.
  • It requires less maintenance and cleaning.
  • Copper is a soft metal that makes it easier for technicians to solder.

Learn more: How to Attach Wires to a Circuit Board Without Soldering


Our main intention is to provide the best advice when it comes to dealing with different kinds of stuff. We are geared towards delivering the best yet unique content that will make it easy for you to deal with daily works.

For technicians, this review post provides immense insights on how to deal with copper pipes. From soldering copper pipe to cutting it, we have the best content that will make it super easy for you to handle this task.

With the right tools, it takes a couple of minutes to solder the copper pipe. Follow all insights detailed here to best solder and also cut the copper pipe. Remarkably, it’s easy to solder a copper pipe with water in it.

Like we said, we are always appreciative of people like access info that will life easier in different aspects. Follow our blogs and learn about learning different life hacks.

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