N scale guides that show their sources

Every figure here is checked against the manufacturer's own page, and where nobody publishes a number, we say so instead of inventing one.

N scale models being measured against a rule on a workbench
Scale converter

N Scale 1:150 vs 1:160 Converter

Same 9 mm gauge, two different scales on it. Convert sizes both ways, and rescale a 3D print correctly.

2026-08-01 8 min
Close-up of N scale turnout point rails on a wooden workbench
KATO turnouts

KATO #4 vs #6 Turnout: Which One Belongs Where

Both diverge at a nominal 15Β°. What actually differs is the radius, the box contents, and the power routing β€” and the shorter one is the expensive one.

2026-08-01 11 min
A DCC command station and decoders laid out for planning on a workbench
DCC

Getting Into DCC in N Scale

DCC Friendly does not mean every decoder fits every car β€” sometimes not even within one train.

2026-08-01 13 min
N scale scenery being built up in layers over foam terrain
Scenery

N Scale Scenery, Layer by Layer

Most tutorials teach how to make it pretty. This one is about the order that lets you fix it three years later.

2026-08-01 12 min