The late Charles Tidy made a GA drawing & model (now in the collections of the Society of Model & Experimental Engineers) from an illustration in a manufacturer's catalogue. The original engine was built in about 1879 and would have powered a small workshop.

The model seen here was made without the use of castings apart from the flywheel. The image sequence shows the method of construction

Cylinder, steam chest & trunnions prior to silver soldering together
Frame parts cut from mild steel prior to brazing together
Steel frame after brazing, this was sand blasted to remove flux & scale before painting
Test assembly to set the valve timing
Completed engine
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