Grace Huang

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Plasti Form Flashlight, Marinette

CAD Modeling and 3D Printing, Soldering and Circuitry, Physical Protoyping

A galaxy-projection lighting device which turns on when rotating a disc so stars align to complete a constellation. A light in a form reminiscent of music boxes and toys that is made to evoke a sense of nostalgia and childhood. 
Duration:
2 Weeks

Course:
Designing Products for Interaction, Spring 2025

Role:
Individual

Tools:
Laser Cutter, 3D Printer, Solidworks, Adobe Illustrator 

Materials:Acrylic Sheets, LED bulb, Reed Switch, Magnet, Spray Paint












Form Sketch Explorations:
Starting with this project, my primary objective was to create a light interaction that tells a story and invites play.

I thought of the simple, analog toys I played with as a kid that could also take on the rectangular box base we were given.





Prototypes:

I started with three prototypes:
(1) A star shadow projector triggered by turning a dial to complete the constellation

(2) A lightbox, where light is turned on to backlight a field of flowers when the user rises the sun to the peak

(3) A lighter




Illustrator + Solidworks Templates:

I took inspiration from the simplified visual elements of Dieter Rams industrial designs, and the aesthetic of historical constellation maps.

Because we were constrained to a filleted rectangular box as the base, I had to find a way to combine rectangular and circular form languages cohesively.

 


Fabrication:
I laser cut and spray painted the acrylic layers, which are assembled on top of the 3D printed box.

In my acrylic layers, I strategically engineered holes and openings to ensure functionality of the circuitry.

Final Laser Cut Template




Soldering & Circuit Design Engineering:



I went through several rounds of experimentation to optimize the visibility of the star projections.

First, I decided between circles or actual 5-edge-star silhouettes as the representation of stars. I realized that stars, though its projection might be stretched and warped, communicated its purpose much clearer.

This specific LED blub orientation produced the most successful star projections!





Final Design: