Wooden Track Junction Maker
Pick a circle or a square and tap two points to create a track. For each used point, pick male or female. Tracks cross at the same level, and you download the result as an STL for printing.
Ready-made designs
Popular junctions to start from. Open one in the editor, change what you need and download the STL.
4-way crossing
Two straight tracks crossing at 90°. The classic X crossing for a figure-eight layout.
Open in the editor →
Crossing with a curve
A straight crossing plus a 90° curve, so the train can go straight or turn off.
Open in the editor →
Three-way switch
One track splits into three: left, straight and right. Great for stations and depots.
Open in the editor →
Double crossing
Two parallel tracks crossing two other parallel tracks in a square. Joins two double-track lines.
Open in the editor →
Crossover
Two parallel tracks with an S-curve between them, so the train can change tracks.
Open in the editor →
45° curve
A single curved track, 45° with a 180 mm radius. Set any angle and radius, or make a straight of any length.
Open in the editor →
How it works
Design custom junctions, crossings and switches for wooden toy train tracks such as IKEA Lillabo and Brio. Choose the connection points, set male or female connectors, check the model in 3D and download a ready-to-print STL file for your 3D printer. Free, in the browser, no sign-up.
FAQ
Does it fit IKEA Lillabo and Brio?
Yes. The default sizes come from tracks that were printed and tested many times. If your track differs, every size can be adjusted.
How do I print it?
PLA, 0.2 mm layers, no supports, flat side down. Print the connector piece (in the panel) first to check how the connectors fit.
Is it free?
Yes, completely free. The STL is yours to print at home.
The connectors are too loose or too tight. What now?
Open “Dimensions & tolerances” and adjust the female (hole diameter and neck width) or the male (head and neck). A few tenths of a millimetre are enough. To test, just print the connector piece: it is small and quick.
How do I join two ends that are both female?
Download the male–male connector from the panel. It has two heads and joins two female ends, just like the original connectors.
Will it fit my printer?
The model footprint is shown under the drawing and in Export. Above 250 mm the page warns you. If it is too big, make the circle diameter or the square sides smaller.
Which way does the train go at a switch?
The switches have no movable blade. Where a track splits from one end into several ways, the train picks one at random. In the other direction, where tracks merge into one, it always gets through, and at crossings it goes straight.
Why can’t I add some tracks?
A curve with a radius under 100 mm is too tight and trains would derail. Make the circle or square bigger, or pick points further apart.