Classroom Repairs

The Classroom Repairs project introduces students to sustainability and product obsolescence issues. Students are to consider the sustainability of products in their environment. Then they identify and produce repairs for the classroom. The project is intended as a single lesson with printing after the session. The project can be extended to a second lesson, if needed, by testing the printed designs and suggesting future improvements.
Design and TechnologyScienceMathematicsComputing
Years | Grades
7th Grade | 11-12 years8th Grade | 12-13 years9th Grade | 13-14 years10th Grade | 14-15 years11th Grade | 15-16 years
Lesson 1: 90 minutes Print time: Variable dependent upon model

Classroom repair trailer
Play 0:34


  • Foster and develop an understanding of sustainability within product design
  • Realize 3D modelling skills against real world applications
  • Be able to define “sustainability”
  • Employ tolerances and offsets
  • Study the relationships between force, pressure and area

Tools and equipment

  • BE3D eDee printer and computers with CAD software
  • Set of example Classroom Repair models
  • A good imagination!

Skill requirements

To participate in the lesson, students should be able to:
  • Develop their own idea for a Classroom Repair
  • Use Fusion 360 or Similar CAD software at a beginner/intermediate level
  • Be comfortable using DeeControl software including adjusting print settings
  • Use the BE3D eDee printer

Classroom Repair walkthrough
Locked 3:27

3D models overview

  • Total print time 3 hours 15 minutes
  • Total filament 5.5 m
  • Additional non-printable components
  • Printed all at once
Coat hook
  • 1 hour 15 minutes
  • 4 m
Chair stopper
  • 2 hours
  • 1.5 m
Note: Values are calculated for one set of models.

Lesson resources

  • Lesson plan
  • Worksheet
  • Walkthrough
  • Walkthrough video
  • Presentation
  • 3D models
  • 3D print instructions
  • Curriculum Alignment: ISTE standard compliant