*1.3. Collaborative Working Environment in Engineering*

Collaborative work has been fundamental to solve engineering challenges. In this sense, cloud storage services, collaborative environments, and social networks offer advantages and limitations [23] that despite its usefulness to communicate, write, and present results, do not allow 3D modeling.

In recent decades, engineering software companies have focused on solving this difficulty by offering high-cost collaborative work platforms (Autodesk Vault, PTC PLM Cloud, or 3D Experience). In this context, Fusion 360 from Autodesk emerges, a collaborative 3D modeling environment that is free for educational and for start-ups generating less than \$100,000/year in total revenue or wholly non-commercial hobbyist users [24]. This software is easy to use, integrates several assisted design environments, and also has a smartphone application for viewing modeling, as well as offering a public web link to visualize the model in the browser [25].

In this article, the case study of the manufacture of a replica of the spatial instrument SO/PHI is provided. The incorporation of low-cost digital fabrication machines (below \$2500) is proposed to solve the traditional characteristics in the manufacture of scale models such as geometric simplification and the high economic cost of detailed prototypes [20,22]. In addition, this approach aims to generate a framework of procedures and techniques of engineering graphics for the conservation and transfer of industrial heritage.

## **2. Materials and Methods**
