1. 3D Systems. (2020).3D printers. Available athttp://www.3dsystems.com/3d‐printers.
2. 3D Systems. (2014).The journey of a lifetime: Celebrating 30 years since the first 3D printed part (3D Systems). 3DSystems RockHill SC. Available athttp://www.3dsystems.com/30‐years‐innovation.
3. The manufacturing of hard tools from metallic powders by selective laser melting
4. Agarwala M. Weeren R. V. Bandyopadhyay A. et al. (1996).Fused deposition of ceramics and metals: an overview. 1996 International Solid Freeform Fabrication Symposium.