How to Cut Cast Iron Pipe with an Angle Grinder

Cast Iron: an Essential Foundation of Your Home

Constructing a new house or repairing the old one, you will find the use of cast iron in different forms within your house, supporting it as one unit. Cast-iron pipework has been utilized for over a period and is still in used fixing drainage problems and in the application of sewer pipes.

The shelf life of a cast-iron makes it more significant and essential in serving as a foundation of the house as it can last up to 75 years. Furthermore, it comes with solid pros, however, it also has a downside. Therefore, it becomes necessary to carefully examine its con while discussing its advantages.


Problems with a Cast Iron

Cast Iron catered hugely as a robust and resilient solution for household applications, however, its usage dopped in 1975. Therefore, this resulted in its restriction of being used for residential builds.

A layer of rust starts to build on the surface of the cast iron, and that can lead to horrendous leakages and disastrous pipework damage. Therefore, in order to control this damage from reoccurring, PVC and ABS are used, as they are lighter in weight and also easier to install.


Dynamics of Cutting through a Cast Iron

It is important to gain a little knowledge of what you are dealing with. The process of cutting through a cast-iron pipe can often lead to a messy situation. Therefore, the following are some things to remember while cutting through the cast iron.

  • It is easier to mistake cast iron for pure iron because some of the properties are quite similar in nature. However, in comparison, a cast iron has a greater number of carbons as compared to simple steel. The greater carbon components in cast iron make it more brittle and less ductile.
  • The Carbon present in the cast iron makes it hard to deform, bend, or give a new shape to the piece of iron. The external pressure applied on the cast iron to bend it can result in shattering the piece under stress instead of bending it.

The job of cutting through the cast iron pipe can be done using a hack saw or a reciprocating saw. However, that should not be your ideal choice.

The edginess and the sharpness of the steel in these saws can result in peeling away a layer of steel, making it tough to cut through and giving it a deformed look.


Why is an Angle Grinder Your Best Option?

Facing the hassles of cast iron pipework in household foundations can be a handful. But, not to worry, these problematic cast iron pipework’s are rectifiable. Therefore, you don’t need to be a qualified plumber for that.

Working with a cast iron pipe will be difficult in a congested space, making it harder and trickier to manage. Hence, identifying and using the right tools you will be required, will get your job done halfway through.

It is one tool that you can rely on from the get-go, eliminating pointless hassles. An Angle Grinder consists of a wheel for grinding, making it an ideal choice for cutting a piece of cast iron as it makes the process swifter.

The Grinding wheel consists of Silicon Carbide, Cubic Boron Nitride, Diamond, and Aluminum Oxide, facilitating in segmenting the cast iron. Furthermore, an Angle Grinder can be your viable option as it is more manageable, neater in segmenting, and less time-consuming.


How to Use an Angle Grinder to Cut a Cast Iron Pipe?

You can now prepare yourself for the process of cutting through a Cast Iron Pipe on your own using an Angle Grinder. Therefore, the following are the instructions that’ll help you go about this task efficiently.

  1. Take the metal cutoff disc/diamond wheel and place it into your angle grinder, making sure it fits perfectly.
  2. Using a piece of marker or chalk, highlight the area you will be segmented on the pipe.
  3. Put on the PPE gear available to you, to protect yourself from any fine particles flying off.
  4. Place the cast iron pipe on the workbench or on the ground, wherever it is convenient for you.
  5. If you have positioned the pipe vertically, operating on-site, make use of riser clamps. These will support you in raising the pipe from the ground level.
  6. Turn on the grinder and segment the pipe, by moving it in groovy motion, cutting through the pipework.
  7. Continue cutting around the perimeter section, allowing the grinding wheel to penetrate through each point of that pipe.
  8. The 4 ½ inch Grinder won’t penetrate through larger portions swiftly, keep cutting around the pipe to finish.


Additional Pros of an Angle Grinder

Angle Grinders are easier to adapt and quite versatile to use.  There are various advantages of using an Angle Grinder over other tools. The parts of the Angle Grinder are easily detachable and can easily be attached. The options of bringing an Angle Grinder in working with a different types of metal designs and steel increases.

It is an ideal choice for working around large surface areas. A perfect solution for working with areas that require little to zero detail. The cuts made with precision, supporting incisions make them more attractive for the metal cutters to work with.

The ability to switch the pieces of the angle grinder in a swift manner, within a smooth flow is rewarding. Furthermore, the high-power segmentation that requires heavy power grinding tools is all encompassed in an Angle Grinder. The metal fabrication that relies heavily on cutting through various types of metal can be an ideal fit for an Angle Grinder.

An Angle Grinder is a perfect option for not only cutting through a cast iron pipe. It caters to segmenting larger metal pieces and deals with various fabrications. The attachments option, along with higher horsepower makes it beneficial for a number of uses.

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