These are plans for steam engines of all sorts of configurations, some practical for putting to work, others, just tabletop demonstrators.

Image	Description	File Spec.	Download
	3 Sisters Engine: A tabletop demonstrator three cylinder radial steam engine easily built of aluminum and brass. Minimal machining.	10 Pgs 260 kB
	1932 Beam Engine: A small model of the original horizontal beam engine from a magazine published in 1932. The plans also include the boiler.	2 Pgs 1.3 MB
	45 Degree EZee Engine: A very simple plan for a small 45 degree single cylinder steam engine worked up by a professor for his students to build as an educational project.	2 Pgs 1.5 MB
	Bett Oscillating Engine: A small oscillating engine designed by Bett as a simple demonstrator.	2 Pgs 217 kB
	Compound Condensing Engine: A complex but efficient design from 1902 capable of being built by an advanced amateur.	16 Pgs 1.3 MB
	Danpf Engine: A good sized vertical engine. The plans are in German but can be easily understood for those not allergic to metric dimensioning.	10 Pgs 416 kB
	David Engine: A small demonstrator designed by Alan Marconett of Hobbit Engineering. Well detailed plans for the first time builder.	6 Pgs 281 kB
	Elbow Engine: An unusual demonstrator engine that takes some skills to build but the results should be stunning.	5 Pgs 281 kB
	Elmer Verberg's 4-Square Engine: Elmer Verberg was a prolific steam engine designer & builder. When he passed he wanted his plans to be public domain. Here's his 4 square - 4 cylinder model engine.	3 Pgs 493 kB
	Elmer Verberg's Baldy Engine: Elmer's Baldy is a horizontal engine using a ball for a piston. This eliminates one joint in the connecting rod for a very robust design.	2 Pgs 310 kB
	Elmer Verberg's Beam Engine: Elmer's Beam is a typical old fashioned beam style engine - the iconic steam engine, easy to build and impressive when running.	4 Pgs 433 kB
	Elmer Verberg's Geared Engine: Elmer's Geared engine is an unusual design but once in use in the factories of the industrial revolution. An efficient design, though complex to build.	7 Pgs 1.2 MB
	Elmer Verberg's Horizontal Engine: Elmer's horizontal engine is a simple double-acting engine of the type comminly used in mills for grinding grain a hundred years or more ago.	4 Pgs 363 kB
	Elmer Verberg's H-Twin Engine: Elmer's horizontal twin cylinder is mostly made of brass so is easy to machine and looks great.	2 Pgs 285 kB
	Elmer Verberg's Open Twin Engine: Elmer's open column twin cylinder engine is a variant of a poppet valve engine originally designed in 1913.	7 Pgs 956 kB
	Elmer Verberg's Radial Engine: Elmer's radial is a simplified, 3-cylinder radial steam egine with a very easy to make disc valve.	5 Pgs 512 kB
	Elmer Verberg's Reverser: Elmer's open column reversing engine utilizes a simple shear seal valve to reverse the engine rotation without clutches and gearing.	3 Pgs 956 kB
	Elmer Verberg's Scotty: Elmer's Scotty engine incorporates a Scotch Yoke mechanism for transferring linear motion to rotary instead of a traditional crankshaft.	2 Pgs 301 kB
	Elmer Verberg's Slider: Elmer's Slider engine employs a slide valve, of the type traditionally used on steam locomotives.	3 Pgs 403 kB
	Elmer Verberg's Vertical Wobbler: Elmer's vertical wobbler engine is a two cylinder inverted "wobbler" style where the motion of the cylinders automatically operates the valves.	2 Pgs 818 kB
	Elmer Verberg's Wobble Plate: Elmer's wobble plate engine uses a stationary cylinder with a wobbline valve plate. Very clean design.	5 Pgs 589 kB
	Elmer Verberg's Wood Beam Engine: Elmer's wood beam engine is a nod to James Watt's original steam engine design.	8 Pgs 901 kB
	E-Zee Engine: This e-zee engine is an ultra simple design built with bent wire and a simple drilled aluminum plate.	2 Pgs 270 kB
	Hilde Engine: The Hilde engine is another simple design using a bent wire crankshaft, slide valve, and mostly brass construction. The plans are in German but the instructions in English.	13 Pgs 467 kB
	Horizontal Slide Engine: This Horizontal Slide engine design is a traditional mill, locomotive, side wheeler steamer type engine.	19 Pgs 405 kB
	Husky 2000 Engine: A teaching design of a demonstrator, easily built that uses a cam operator.	6 Pgs 516 kB
	Jepson Engine: The Jepson is a 3/4" Bore, open framed, vertical, slide valve engine from 1947 with pretty well detailed components.	3 Pgs 113 kB
	Jingle Bell Engine: The Jingle Bell is a mostly aluminum demonstrator using a wobble plate valve design.	3 Pgs 455 kB
	Kouhoupt Engine: The Kouhoupt engine is a model walking beam engine that appeared in a magazine designed by a fellow named Rudy Kouhoupt. It's intended for the home modeler and doesn't require any castings.	5 Pgs 1.1 MB
	L-Frame Oscillating Engine: The L-Frame Oscillator is a modern, simple demonstrator design that should be easily able to be put together by the home hobbyist.	2 Pgs 209 kB
	Model Boilers: A pretty good treatise on how to build model steam engine boilers for the home builder.	20 Pgs 551 kB
	Model Steam Turbine: This Model Steam Turbine is an interesting demonstrator and should be fun to watch, but it couldn't be used to do any work.	12 Pgs 299 kB
	Muncaster Steam Engines: This is a 1950s look at some 1900s designs by H. Muncaster. There are detailed plans to build 9 engines of different types and complexities in this series of articles.	29 Pgs 965 kB
	Michael Niggel Boiler: A small steam engine boiler designed my Michael Niggel. The metric plans are in French but easy enough to follow.	29 Pgs 965 kB
	Michael Niggel Vertical: A vertical single cylinder engine. Very well detailed metric plans in French.	16 Pgs 229 kB
	Michael Niggel Twin: A vertical two cylinder engine. Very well detailed metric plans in French.	12 Pgs 220 kB
	Pirker 4-Cylinder Engine: An interesting modern 4 cylinder wobbler valve steam engine design. The description is in German and the plans in Metric.	17 Pgs 505 kB
	River Queen Engine: A nicely designed marine type model engine from the 1950s.	17 Pgs 505 kB
	Rotary Twin Engine: An easily machined twin cylinder steam engine with a rotary valve.	5 Pgs 4.4 MB
	Simple Engine: A simple vertical rotary valve engine from the 1930s, though castings are called for, but you could substitute CNC machined billet parts fairly easily. Plans include a boiler.	5 Pgs 993 kB
	Small Horizontal Engine: A small horizontal engine from a very old set of plans.	5 Pgs 607 kB
	Small Oscillator Engine: A demonstrator using the oscillating (Wobbler) principle.	4 Pgs 340 kB
	Small Vertical Engine: A small vertical steam engine based on a very old design. This requires castings.	16 Pgs 11.6 MB
	Soumard Twin Engine: A very well designed two cylinder vertical engine with slide valves. The plans are in French and are Metric.	10 Pgs 776 kB
	German V Twin Engine: A beautiful V-Twin steam engine from a German designer. The plans are Metric and in German. Steam Harley anyone?	42 Pgs 1.2 MB