A free handbook for model railways
Two rails, a controlled voltage, and a few hundred grams of rolling metal obeying physics you can see. Everything else — the scenery, the timetable, the little people waiting on the platform — is decoration on top of a mechanism that either works or doesn't. This site teaches the mechanism first.
Almost every abandoned layout was abandoned because these were done in the wrong order. Scenery over unreliable track is lipstick on a stalling train; a beautiful locomotive on a 2 mm kink will derail in exactly the same place, forever. Get each layer boringly dependable before you start the next.
Radius, gradient, turnout number, rail height, joints, and the clearance between two passing trains. This layer is arithmetic. Get it wrong and no amount of skill rescues it — track and plans.
A locomotive is a gearbox, a motor, eight electrical pickups and a coupler at a fixed height. Learn what each part does and a “bad runner” usually turns out to be a five-minute fix — locomotives and stock.
Ground cover, structures, backdrop, lighting, and the reason the railway exists at all: a quarry, a docks, a branch to a market town — benchwork and scenery.
This is a 6 ft × 3 ft (1.8 × 0.9 m) plan in HO or OO — about the smallest board on which a train can run continuously and have something to do. Learn these six words and every track plan you ever read becomes legible.
The through route. On a small board it is usually an oval so trains can run without you touching anything — sometimes disguised so it doesn't read as a circle.
Two parallel tracks joined at both ends. It lets one train overtake another, and lets a locomotive run round to the other end of its train.
A dead-end siding into a customer: mill, coal yard, warehouse. Spurs are where the work happens — a layout without them is a train set.
The moving track junction. Never call it a “points” if you want American parts, never call it a “switch” in a British shop. Same thing.
Hidden or off-board track where trains wait. It turns a loop into a railway that goes somewhere: trains arrive from the rest of the world and return to it.
The furniture underneath. Flat, rigid, and at a height where the trains are near your eyes rather than at your knees — 100–130 cm is the usual band.
Not malicious, just old. The hobby's folk wisdom is full of advice that was true in 1975 and hasn't been true since ready-to-run mechanisms and digital control arrived.
Half right. Buy the set — it is the cheapest way to own a working locomotive. But the set's sectional track and its 15 inch curves are the two things you will throw away first. Spend the second hundred on decent track, not more wagons.
Bigger is easier to see and handle, and much harder to fit. O scale needs roughly four times the floor area of HO for the same railway. The honest answer is a trade between eyesight, hand steadiness and available metres — the scale guide walks through it.
It was, in 1995. Today a starter DCC system is often simpler than DC: no block switches, no wiring sections, each locomotive answers to its own number. What DCC demands is tidy wiring and a habit of not shorting the rails — power and DCC.
A shelf 1.8 m long and 30 cm deep holds a complete switching layout that will occupy you for years, in HO. In N it holds a small terminus and a country junction. Space limits what kind of railway, not whether.
Rough figures for a 6 ft × 3 ft HO/OO layout bought new in 2026, in US dollars; sterling and euro prices track within about 10%. Second-hand and club sales cut the rolling-stock lines by half or more.
| Item | Thrifty | Comfortable | What you gain by spending more |
|---|---|---|---|
| Locomotive | $90 | $250 | All-wheel pickup, a flywheel, a decent gearbox — the difference between crawling smoothly and stalling on every turnout. Sound adds roughly $100. |
| Rolling stock (6 cars) | $70 | $220 | Metal wheels, knuckle couplers fitted, separately applied detail. Cheap wagons can be upgraded later for about $8 each. |
| Track (flex + 4 turnouts) | $120 | $230 | Code 83/75 rail instead of chunky code 100, and turnouts that don't need surgery to run reliably. |
| Control | $60 DC | $250 DCC | Independent control of several locomotives, sound, lighting, and no section switches to wire. |
| Benchwork + baseboard | $50 | $140 | A hollow-core door or a proper open-grid frame instead of a warping sheet on trestles. |
| Scenery materials | $60 | $180 | Static grass applicator, better ground foams, a printed backdrop, a couple of kit buildings. |
| Tools you will actually use | $45 | $150 | Track gauge, coupler height gauge, rail nippers, a 25–40 W soldering iron, a multimeter. |
| Total | ≈ $495 | ≈ $1,420 | Spread over a year, the thrifty column is about $40 a month. |
Track and turnouts, every time. A £200 locomotive on £40 track runs worse than a £60 locomotive on £150 track, because almost all faults are track faults wearing a locomotive costume.
Read them in this order if you are starting cold. Dip in anywhere if you are not.
The six decisions to make before you buy anything, a first shopping list, and a tick-list that takes you from empty table to first train.
Z through G drawn to size on one page, what “gauge” really means, and why OO is the odd one out.
Rail codes, minimum radius, turnout numbers, gradients, and four proven track plans you can build.
How steam and diesel models are put together, Whyte notation, couplers, wheels and car weighting.
DC versus DCC, what a decoder does, bus and feeder wiring, CVs worth knowing, and reverse loops.
Frames that stay flat, terrain from foam and plaster, ballast, ground cover, trees, and weathering.
Something already going wrong? Say what it does in plain words and get the checks to make, in order.
Draw the train you want on the pad, describe what it is, and get a build sheet: the route in, the order of work and the parts to buy.
Install the whole handbook on your phone or laptop: its own icon, its own window, and every page readable in a loft with no signal.
Three other free handbooks, built the same way — hand-drawn diagrams, no accounts, no tracking, and everything readable offline.
A free course in hand knitting: the two stitches everything else is made from, a full stitch library, charts, techniques and hand-picked video tutorials.
Cooking fundamentals rather than recipes: five dials, a heat ladder drawn to scale, salt and ratio calculators, and ten techniques in the order they build on each other.