PT Journal AU Issayev, G Aitmaganbet (ORCID: 0000-0002-7439-305), A Shehab, E Ali, H TI Bonding Strength Analysis of Multi-material and Multi-color Specimens Printed with Multi-extrusion Printer SO Manufacturing Technology Journal PY 2021 BP 627 EP 633 VL 21 IS 5 DI 10.21062/mft.2021.072 DE 3D Printing; FDM; Dual-colors; Multi-layers; Infill AB This paper highlights the findings of multi-material application in 3D printed specimens. The work presents experimental results of multi-material, and multi-color-based 3D printed specimens by a multi-extrusion printer developed at the laboratory. It aimed to determine the bonding properties between the layers of various materials indicated with different colors. The samples were printed across multiple infill models and tested in the tensile and compression machine. The specimens were created with 10%, 25%, and 100% infill having single and dual colors material. Polylactic Acid (PLA), Acrylonitrile Butadiene Styrene (ABS), and Flex materials were used for printing various specimens with various colors. The layers were printed synchronously. The filaments were changed according to the predetermined algorithm. The experimental results showed that the mechanical properties of single, dual, and triple mate-rial specimens differed according to the reinforcement strategy. In addition, the mechanical property of the same material with different colors was identical. ER