Lego 4.5 V Track, curved & straight

thingiverse

If you've lost a track piece for your original 4.5 volt Lego train tracks, here are models to reprint them. They lack the tiny angled deflection in the bottom at each end so they don't slope downhill quite as well but they work well. Each curve is 22.5 degrees, with a centerline radius of 320 mm, or about 12". Inside curve radius 300 mm. Outside curve radius 340 mm. Print with no supports or they won't work because it will be impossible to get the supports out of the holes on the underside. Blue PET-G worked well, but PLA would probably work too. The underside is slightly modified for printing with square peg holes instead of the groove & dot.