Beam Single
Half Beam
Mill Single
Mill Twin
Tandem Twin Mill
Marine Single
Marine Twin
Quad Mill
V Twin
Horizontal Boiler 3.5inch
Horizontal Boiler 5inch
Vertical Boiler 4.5inch
Marine Single Package
Mill Single Package
Beam Engine Package
Mill Twin Package
Marine Twin Package
Marine V Twin Package


Chiltern Model Steam provides a range of live steam model (miniature) steam engine kits, fully machined, that can be easily assembled into fine examples of the sort of engineering that powered the industrial revolution.

They are much more than toys as when assembled the engines are fully working and can be used, for example, standalone or to power a model boat.

The models can be run using live steam or simply using compressed air from foot or hand pumps.

We hope that customers, young and young at heart, will enjoy assembling the models and find it an educational experience.

See our Educational pages on the history of steam engines, how they work and how they are made.


"The beam engine... what can I say. It’s perfect.... thank you for creating such a wonderful, “affordable” model! I say affordable, because in the past, I’ve looked at the Stuart Beam engine, and without Lathes and mills etc to machine the rough casting, it’s out of reach of the novice engineer... until I met you and your products" - IanL on buying the Beam Engine

"WOW what a beautiful piece of engineering can’t wait to see it running." - RobJ on buying  Mill Single

"The mill engine arrived tonight, and I can only say BRILLIANT!! Im so pleased with the engine, and will look at it properly in daylight. Packaging superb, your service has been exemplary plus you are such a nice person to deal with. "Thanks" barely seems adequate, so a big THANK YOU!!!...., I will be back to order a twin mill engine :)" - StewartK on buying  Mill Single


We hope all our customers and their families stay safe and well during the current crisis. 

Our machinists and boiler maker have had a lot of disruption over the past 6 months but we hope to have boilers and all our engine kits, plus a few new models, in stock by the end of September.

See our new Half Beam or Grasshopper,  Quad (four) Cylinder Mill Engine and V (vee) Twin Marine Engine Fully Machined Kits. Also available shortly are Twin Beam and Quad Marine engine kits.

Our most popular, the 3 1/2inch boiler will shortly be back in stock. We will also shortly hold a stock of 5 inch boilers. Our great value packagesLive Model Steam Engine, mount, steam and gas pipes now with 3 1/2inch or 5inch boilers.