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Personal Engineering Project

Safety Spectacles — Multi-Material PPE Design

A pair of wrap-around safety spectacles combining a curved lens, a teal-and-cream frame and soft-touch temple arms — a surface-modelling and multi-material study built in SolidWorks.

Type
Personal practice project
Location
Kampala, Uganda
Year
2026
Turnaround
6 days
Before / After

From rough idea to production-ready

Before — initial concept sketch for Safety Spectacles — Multi-Material PPE Design, Product Design project by DesignForge UgandaBefore
Front-view pencil sketch establishing lens shape, bridge and temple layout.
After — finished CAD design of Safety Spectacles — Multi-Material PPE Design, Product Design project by DesignForge UgandaAfter
The finished SolidWorks model with a wrap-around lens, layered two-tone frame and matte temple arms.
The Challenge

What needed to be designed

PPE has to fit faces, not planes. The lens wraps in two directions at once, and the frame, nose bridge and temples all have to follow that same wrap with no gaps, no interference and a shut line that reads cleanly in a render.

The Approach

How DesignForge approached it

  1. 1

    Built the lens as a swept and lofted surface along a face-following curve, then thickened it to lens gauge.

  2. 2

    Offset the frame from the lens edge as a separate body so the two-tone rim keeps constant thickness all the way round.

  3. 3

    Modelled hinged temple arms and the nose bridge as distinct bodies for multi-material appearance assignment.

  4. 4

    Assigned clear lens, teal accent and matte polymer appearances and rendered the set against a dark backdrop.

The Deliverable

What was produced

The finished SolidWorks model with a wrap-around lens, layered two-tone frame and matte temple arms.

Tools

Software and capabilities used

  • Surface Modelling
  • Multi-Body Parts
  • Appearance & Rendering
  • Ergonomic Fit
Skills Demonstrated

What this project put into practice

Multi-body product design

Skill practised

Two-direction wrap

Lens

3 in one model

Materials

Gap-free frame offset

Fit

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