Connect two female ends of Brio wooden train tracks with this male-male connector.
I found that this model is a very snug fit in new (2017) wooden br...io tracks, but doesn't always fit in (30 years) old tracks. I'll probably update this design to have little bit more clearance.
3d model print parameters
PLA and Cura's 'nomal' profile with 0.3mm layer height worked fine for me on my UM2+...