Steam Engine Fabrication

Overview

Completed a voluntary three-day supervised fabrication workshop in a group of three, focused on machining, joining and assembling supplied components into a small steam-engine model.

The workshop began with a safety induction before practical machining and fabrication work.

Machining & Fabrication

I used a metal lathe to machine supplied components including the flywheel and a small top fastener, carrying out operations including facing and chamfering.

I also used a milling machine to shape and prepare supplied components for assembly, including machining flat and multi-sided features.

The workshop included preparing and brazing brass components, including the boiler end caps, outlet tube and chimney assembly. I also measured, bent and welded the base structure from supplied material.

During welding, heat accumulated quickly in the small workpiece and eventually caused burn-through despite the individual welds being short. In future, I would allow more cooling time and alternate between opposite sides of the workpiece rather than making consecutive welds in the same area.

Assembly

The final morning focused on fitting the machined, brazed and welded components together using hand tools, resolving minor fit and alignment issues, and completing the final assembly.

The workshop was primarily an introduction to practical machining and fabrication processes rather than an independent design project.