Background
The larger painting device is intended to make a creative activity more accessible for children with limited mobility. This module focuses on the stamping action: applying a painted ceramic tile without requiring the user to perform the full vertical motion by hand.
The mechanism must convert a simple button-triggered input into a repeatable stamping stroke. It also needs to fit within the larger device and remain practical to fabricate with available shop processes.
Approach
A Scotch-yoke converts rotary movement into a straight reciprocating stroke. In this concept, that motion drives the cork-backed stamping surface down toward the tile and then returns it to the starting position.
As the mechanical engineering lead, I helped compare motion concepts and developed engineering drawings for the selected mechanism. I also planned the next fabrication work around metal-shop machining.
The team moved from interaction need to motion selection, then from the Scotch-yoke concept into engineering drawings. The next documented step was physical machining; original drawings and build photographs are still needed for a complete case study.
Impact
The project established a clear motion architecture and a fabrication-ready direction for the stamping module. Completion status must be updated before public launch.
Accessible design benefits from separating the user’s input from the mechanism’s work. A simple, low-force control can enable a larger physical action when the motion conversion is deliberate and predictable.