In various embodiments, a wearable object engine generates wearable objects. The wearable object engine represents a digital design of a wearable object as toolpaths. In operation, the wearable object engine generates visual guidance that indicates a portion of the design based on the toolpaths, a configuration associated a nozzle of a fabrication device, and a configuration associated with a portion of a human body. The wearable object engine causes the visual guidance to be displayed on the portion of the human body. As the nozzle moves over the portion of the human body, the nozzle extrudes fabrication material that forms the portion of the wearable object directly on the portion of the human body. Advantageously, a designer may control the nozzle to fabricate the wearable object while receiving visual guidance based on the digital design.

A method of forming a substrate includes mapping a three dimensional spatial distribution of at least one structural protein fiber of extracellular matrix of biological material of interest, designing a fiber assembly pattern based on an intrinsic pattern of the at least one structural protein fiber of the extracellular matrix of the biological material, and assembling fibers based on the fiber assembly pattern to form the substrate.

Conventionally, validating a configured jacquard card is manual, difficult and time-consuming process. Automated techniques require complex and costly hardware setup. Embodiments of present disclosure provide a method and system to verify and reconfigure design values of reconfigurable jacquard cards. It obtains a design from user and generates reference images of patterns required to weave the design. The user then configures the jacquard card based on the reference images and scans them after configuration. Patterns in the scanned images are validated against the reference images by identifying position of first top left hole and iteratively verifying the remaining holes by traversing one hole at a time and comparing its pixel value with that of the reference image. If the user has to create a new design using the same set of configured jacquard cards, order of the cards to be used for reconfiguring the new design with minimal cost is suggested.