ABC and 3D: Opportunities and Obstacles to 3D Printing in Special Education Environments
Erin Buehler, Shaun K. Kane, Amy Hurst · 2014 · Proceedings of the 16th International ACM SIGACCESS Conference on Computers & Accessibility (ASSETS 2014) · doi:10.1145/2661334.2661365
Summary
This paper presents a formative study exploring how 3D printing can support special education across three diverse sites: a school for students with moderate to severe cognitive disabilities (Site A), a school for blind and visually impaired students (Site B), and the technology center of a national blindness organization (Site C). The authors conducted six months of classroom observations at Site A, 13 semi-structured interviews with instructors, administrators, occupational therapists, and AT specialists across all sites, and a co-design project with occupational therapists. They identified three primary functions of 3D printing in special education: STEM engagement (teaching students design and fabrication skills), creating accessible educational aids (tactile graphics, math manipulatives, curriculum models), and creating custom assistive devices. A compelling case study involved occupational therapists at Site A who had spent over $150 on off-the-shelf stylus grips without finding a satisfactory solution for a student with limited grasp. Through iterative prototyping using clay modeling, 3D scanning, and printing, the researchers created a custom-fitted stylus grip that met the student's needs — demonstrating 3D printing's potential for personalized, low-cost AT. At Site B, a ZPrinter 450 (donated, ~$40,000) was used to create tactile Cartesian grids and student-designed figurines, though the resin composite prints proved too fragile for a population relying on extensive handling.
Key findings
The study revealed significant obstacles alongside the opportunities. For students with cognitive impairments, even "novice-friendly" 3D design software (Tinkercad) posed challenges: difficulty manipulating camera angles, confusion between object movement and view adjustment, trouble with 3D spatial reasoning (creating designs with floating elements or objects below the build plane), and frustration leading to diminished interest. No open-source 3D modeling software was accessible to screen readers at the time — a critical barrier for blind students. The ZPrinter's resin composite prints were too fragile for tactile use, crumbling with handling despite being chosen for its color capabilities. Occupational therapists saw enormous potential but perceived the design and printing process as "someone else's work" due to time constraints and learning curves. Physical placement of the printer mattered — therapists were hesitant to use a printer located in the technology classroom. The authors offer detailed recommendations across four stakeholder groups: printer manufacturers (accessible feedback, safety, customer support), software developers (screen reader support, novice-to-expert progression, unprintable design detection), education organizations (training time budgets, printer reliability, resource sharing plans), and therapists (custom-fit AT is possible but requires iteration time and student access).
Relevance
This paper is one of the first to systematically examine 3D printing in special education contexts, providing a foundational framework for understanding both the promise and practical barriers. For accessibility practitioners, the key insight is that 3D printing serves three distinct and equally valuable roles — STEM skill-building, accessible content creation, and custom AT fabrication — each with different stakeholder needs and challenges. The finding that no open-source 3D modeling software supported screen readers highlights a significant digital fabrication accessibility gap. The stylus grip case study demonstrates a replicable model for therapist-researcher collaboration on custom AT, while also revealing the bottleneck of student access time in iterative design. The recommendation to invest in multiple inexpensive printers rather than one expensive one, and to create curated repositories of printable educational objects, offers practical guidance for schools considering this technology. The paper's multi-stakeholder analysis (students, teachers, therapists, administrators, AT specialists) provides a comprehensive view rarely seen in assistive technology research.
Tags: 3D printing · special education · assistive technology · digital fabrication · STEM education · cognitive impairment · visual impairment · occupational therapy · universal design for learning · DIY assistive technology