A set of train tracks compatible with LEGO® battery powered trains. My goal was to have more flexibility, so I designed curved pieces in different radii and length, shorter straight pieces, and a 67.5 degree crossing.

• Straight tracks are identified by number of ties.
• Curved track pieces are identified by radius in LEGO® dots and number of equivalent ties at R40
• Crossing are identified by the crossing angle.

Prints well with either PLA or ABS. If you have a smaller print bed, try rotating the pieces 30 or 45 degrees to make them fit. I recommend printing at "High Quality" or "Fine" mode (<=0.15mm resolution) for accurate dots and a nice snap action with other track pieces. Print without support - support for the rail ends is built into the design. These support pieces will snap off easily (2 per track end) by gripping them with a pair of pliers (see picture). If you'd rather use the supports generated by your slicer, use the files with the "-nosupport" suffix.

All pieces are also available without the Lego dots on top, and flat bottoms, in the "-nodots" files.

For the pieces which match standard LEGO® train elements, it is probably more economical to just buy them, unless you buy your filament on sale, or have some filament left that you just want to finish.

A good source of information about LEGO® track geometry is here:
http://l-gauge.org/wiki/index.php/Welcome_to_L-Gauge

Another great site for Lego compatible tracks is here: http://4dbrix.com . They have switches as well.

Update 9/4/2023:

• Added versions without dots and without built-in supports

Update 12/10/2019:

• Small tweaks for better snap action and print results
• Added longer straight track sections

Update 10/24/2019:
Hollowed out bottoms of rails and most ties so you can connect pieces below

Update 5/19/2019:

• Added narrow R24 and R32 curves on request. I do not know if Lego trains can actually negotiate such sharp curves.

Update 2/17/2019:

• Tweaked a couple of dimensions, to address some feedback I have received. The dots came out a bit too small for many people. I also noticed that the top of the rails was a bit too high. Snap action is also a bit improved.
• Corrected a small design mistake at one of the rail ends which didn't affect the function but made it easier to print
• Included snap-off support in the design for the rail end overhangs

LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this site