Gravitrax high speed curves - original lay up.
These curves are working perfectly also at high speeds - e.g. shortly after the Gauss cannon, where the ball flies out of orbit with the orignal components.
Use the support only at the bottom surface - e.g. greater than 80 degrees
A thin layer adjustment ( i used 0,15mm) is recommended so that the overhangs at the top area are printed cleanly.