Charlie Duffell

Discipline: Mechanical design
Based: Harrisburg, NC
Studying: Engineering, business admin minor

Engineering student at NC State, minoring in business administration. I founded Charlie's Innovations and sold a part I designed into ten Chick-fil-A stores; now I am working toward automation and robotics.

Open to Winter 2027 internships and co-ops, and beyond.

01·2024 to 2026

Quick-Clip

A CNC-machined replacement for a part Chick-fil-A drive-thrus were buying three to five times a year. Two years in service, zero replacements.

Product design · CNC · Sales

02·2026 to present

Dropline

Gravploy, a gravity fed dispensing system

A gravity fed dispenser that separates and counts mixed products out of a bin, priced to be reachable for mid-size operations rather than only the largest ones. It is the case for dispensing over robotic picking, currently being defined by the people who would have to run it.

Mechanical design · Automation · In progress

03·2026 to present

Redense

A resume builder whose LaTeX pipeline guarantees one page at any content length. It recompiles until it fits, and never shrinks the type to get there.

Software · AI · LaTeX

04·2026

From Landfill to Living Design

A Bluetooth speaker and lamp built into a discarded glass jar. Only about 31% of glass produced each year gets recycled that year; this gives some of the rest a second life.

Product design · Circuit design · Team of four

All work(05)