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Skreppa - The Modular Shoe Detailed Design

This detailed design project aims to reinvent how people use shoes by enabling wearers to swap components easily, using ethically sourced materials and reducing environmental impact. The project involves various phases such as detailed design planning, prototyping, and finalizing test plans to enhance the shoe's functionality and sustainability while addressing materials and recycling issues. With a focus on ethical practices and innovative design, the project seeks to revolutionize the footwear industry.

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Skreppa - The Modular Shoe Detailed Design

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  1. Skreppa - The Modular Shoe Detailed Design By Nick Amato, Mickey Evans, Haley Gallagher, Lydia Yeckley

  2. Greetings MSD Guide - Jerry Adamski Customer - VP Engineers for Sustainable World - Bri Goold Project Team - Skreppa (Modular Shoe) Industrial Designers - Noah Flynn & Chris Flemming

  3. Agenda • Purpose Statement • Project Objective & Mission • Phase Gate Reviews • Current Phase Plans • Scope Changes • Similar vs Dissimilar Materials of each Shoe • Shoe Last • Prototyping • Finalizing Test Plans • Life Cycle Assessment Comparison • MSD II Plan • Feedback & Comments

  4. Purpose Statement 20 Billion Pairs of Shoes Made per year • Fast-changing fashion industry • 79% of shoes are thrown in landfills • Americans toss 300 million pairs of shoes per year • Components aren’t recycled - various components

  5. Project Objective & Mission Skreppa is... • Reinventing how people use shoes • Using ethically sourced materials • Enabling wearers to swap components with ease

  6. Phase Gate Reviews

  7. Detailed Design Plan Project Steps • Finalize mechanism design • Decisions regarding scope • 3D printing shoe last - cutting template • Project plan for next semester • Bill of Materials Update with Purchases • Finalized test plans • Identify obstacles for MSD II Detailed Detailed Design (11/9 - 12/3) • Mid-phase progress report • Complete design output • All design documentation • Complete & up-to-date on EDGE • MSD II plan • (first draft, but with project-specific detail) • Engineering Requirements (complete) • Risk assessment, mitigation plans & triggers • Test plan (complete, addresses all requirements, equipment & procedures defined, traceable to requirements) • Ready to order long lead-time parts and implement the design

  8. Scope Change From • 2 upper types, 3 cupsole types, working mechanism To • Hiking & Flat - upper & cupsole with working mechanism Why? • Additional complexity with bending requirements • Different techniques used for different shoes

  9. Similar & Dissimilar Material Report

  10. Shoe Last • 3D Printed via the Construct @ RIT • Cost approximately $6.60 to print • Premade shoe lasts were $70 or more from an online retailer. • Used to: • Generate upper template • Gain perspective on sizing • Visualize mechanism • Sized to a Women’s 8.5

  11. Mechanism Prototype- Slide Mechanism Slide mechanism on calculator cover served as inspiration for our joining mechanism First pass 3D print of slide mechanism

  12. Finalized Test Plans Comfort Scale Engineering Requirement → Test Plan • Comfort for Customer → Comfort Scale (See Image on Right) • Outsole Cure Time → Based on average time taken taken to fabricate • Changeover Time → Integrated into comfort scale (+100 Tests) • Topsole Fabrication Time → Based on average time taken to fabricate • Durability → Based on testing of 50 users • Toe Bending Give Test → Simple Scale Testing Required • Waterproofing - Submersion Testing

  13. Lifecycle Shoe Comparison • Materials have most impact on CO2 footprint • Skreppa values based on construction with non ideal materials

  14. Bill of Materials Update with Purchases Total Purchased $82.40 External items addressed $77 of material identified (Quick TAT) Mostly internal build items remain

  15. Project Plan for MSD II • Build & Test Prep • Subsystem Build & Test • Integrated System Build & Test • Customer Handoff & Final Project Documentation

  16. ESW Winter Presentation

  17. Next Gate Objectives Project Steps • Receive Ordered Items • Upper cutting • Fabricate female track • Fabricate male track • Construct prototype • Generate physical proof of concepts • Concept Refinement • Risk & Problem Tracking • Pattern/template drawn up for topsole Build & Test Prep (1/15 - ~2/12) • MSD I post-mortem • MSD II project plan (rev 2) • Status long-lead time purchases • Test plan (rev 2) • Test bench setup • Problem tracking in place

  18. Feedback & Comments

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