All projects
Product Design
Personal Engineering Project

Molded Cantilever Chair — Surface Modelling Study

A single-piece cantilever chair modelled entirely with surfaces to practise continuous, curvature-smooth geometry — the hardest kind of shape to control 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 Molded Cantilever Chair — Surface Modelling Study, Product Design project by DesignForge UgandaBefore
Pencil side-profile sketch establishing the S-curve and cantilever stance.
After — finished CAD design of Molded Cantilever Chair — Surface Modelling Study, Product Design project by DesignForge UgandaAfter
Finished surface model with a glossy red appearance and zebra-clean transitions.
The Challenge

What needed to be designed

The whole chair is one flowing skin. Any kink in the profile shows instantly under a glossy finish, so I had to keep tangency and curvature continuity across every boundary surface rather than patching things with fillets.

The Approach

How DesignForge approached it

  1. 1

    Laid out 2D profile and section sketches on planes to lock the silhouette and seat height.

  2. 2

    Built the shell with lofted and boundary surfaces, matching curvature at each edge.

  3. 3

    Ran zebra-stripe and curvature-comb checks, reworking sketches instead of adding cover-up fillets.

  4. 4

    Knitted and thickened the surface body, then applied a glossy render appearance and studio lighting.

The Deliverable

What was produced

Finished surface model with a glossy red appearance and zebra-clean transitions.

Tools

Software and capabilities used

  • SolidWorks Surfacing
  • Loft & Boundary Surfaces
  • Curvature Analysis
  • Appearance Render
Skills Demonstrated

What this project put into practice

Class-A surfacing

Skill practised

Curvature (G2)

Continuity

Single thickened shell

Body

Zebra + curvature comb

Checks

Next case study

Lifting Hook Block — Mechanical Assembly

View next project

Every project is unique. Let's discuss your requirements.

Fixed quotes. No hourly billing. Tender-ready documentation your fabricators can actually work from.

Start a Project