Customized design-to-fabrication workflow for the fractal-like scaffolds with 3 iterations. (a) Schematic diagram of the digital workflow. (b)-(i) Realization of digital workflow in visual programming. Grasshopper, as a visual programming plug-in of Rhinoceros software, is used to realize the carrier of the workflow of the fractal-like scaffolds. The customized components in this workflow include: (b) Geometric parameters, (c) Fractal parameters, (d) Design of fractal-like scaffolds, (e) Gradient analysis, (f) 3D model export for simulation, (g) 2D curves, (h) Setup parameters based on the printer’s code rules, (i) Custom codes, and (j) Output G-codes.