**1. Introduction**

In recent days, Additive manufacturing (AM) is often called as 3D printing and this is basically a transformative method to the conventional industrial production that takes us to the creation of light as well as strong components simply by adding the material layers [1]. This is generally called as additive layer manufacturing (ALM) because the final component is fabricated by depositing materials, usually layer over a layer. This ALM is shown in **Figure 1**. Any shaped 3-dimensional objects may be fabricated with the help of this AM concept. This is a dominant process nowadays occupied by the majority of industries over the subtractive manufacturing methods such as machining and cast forming. This is because the fabrication of components using this AM looks effortless compared with subtractive processes [2]. AM is believed to be the future of many industries, simply not

**Figure 1.**

*Concept of additive layer manufacturing (ALM).*

only in manufacturing factories but also in the construction fields. This 3D Printing technology is now widely used in the field of constructions.
