Laser on a 3D printer turns Kapton tape into laser-induced graphene with PWM control
johnowhitaker · x · 2026-09-30
johnowhitaker shares a neat maker technique: hitting polyamide film (e.g., Kapton tape) with a laser creates "laser-induced graphene" (LIG), a somewhat conductive, high-surface-area material with potential catalysis applications (especially with additives) and self-heating when current runs through it. He mounted the laser on his 3D printer with PWM brightness control for much more precise LIG patterning, though he says he won't have much time to tinker with it soon.
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