3B train is a site dedicated to providing 3D models of trains in the "B train" (Bトレイン) format pioneered by Bandai.

This "B train" format of trains limits the length of each train car to 6 cm regardless of their realistic length while retaining N-scale (1/150) width, height and features.

While a large amount of B train models have been produced by Bandai since 2002, there remains a multitude of models yet to be rendered in this format. By the end of 2018, Bandai decided to reduce the number of new products. 3B Train seeks to fill this gap by providing new models that you can easily print to keep the B train world growing! We produce models of new trains or trains that have not been produced in the B Train format by Bandai. 

How can I build a 3B Train?

There are a few simple steps to completing your very own 3B Train:

Browse for your favorite model on 3Btrain.com
Pick your favorite Btrain model from the numerous choices offered in the shop
Download the 3D files
Download the 3D files and detailed building & painting instructions
Print the model
Print the model yourself or order the model to be printed at your local 3D printing service provider
Paint and detail the model into your own custom Btrain

Follow the easy-to-follow instructions on painting and detailing the model with stickers to perfect your 3Btrain!