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Publication Date

Summer 8-15-2019

Document Type

Final Report

Problem Statement

This report details the design process, from ideation to iteration, of a sidewalk chalk spirograph machine prototype. The spirograph machine utilizes a set of lazy tongs, gear system, and lazy susan bearing that allow the user to sit on the platform and turn a crank to create vibrant, radial chalk patterns. The design team based design decisions on various analyses, including user needs, strength of materials, and industry safety codes and standards. All analyses are contained within the report, along with models and instructions that can be used to replicate the sidewalk chalk spirograph machine.

Author's School

McKelvey School of Engineering

Author's Department

Mechanical Engineering and Materials Science

Class Name

Mechanical Engineering Design Project (UMSL JME 410)

Available for download on Thursday, August 15, 2030