Methods and apparatus for compressing material during additive manufacturing

This invention describes a 3D printing machine that lays down material and immediately presses it flat with a roller. The machine uses an extruder and a positive displacement gear pump to precisely control the material flow. The roller, which has a cylindrical center, follows the nozzle's path as it prints.

Why it matters: The primary challenge remains the precise mechanical and software synchronization needed to effectively compress material without introducing new defects. Two years is too short a period for significant enabling changes in this hardware-focused domain.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: ModerateExtruder, gear pump, custom roller, CNC motion

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