Rebuilding a fire extinguisher range in CAD from photographs and written specifications — no drawings, no source models, and no access to the physical products.
Dimensional accuracy was the governing requirement: the models feed product documentation for life-safety equipment.
Intime Fire Appliances had no CAD data for their trolley extinguisher range. I was brought in remotely to rebuild it — working from photographs, catalogue material and written specifications, without ever handling one of the products.
That is the whole difficulty of the job. A photograph gives you proportion but not dimension, and a specification gives you a few dimensions but not the relationships between parts. The models were going into product documentation rather than a brochure, so dimensional accuracy mattered more than appearance — a render that looks right is worth nothing if the hose fitting is the wrong size.
The range shares an architecture across three configurations and two capacities, so I built the assemblies modularly. Changing the cartridge arrangement or the vessel size swaps components rather than requiring a remodel.
Interactive 3D model — 17 top-level components, exported from SolidWorks with its appearances.
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