Hot Wheels car track clamp by Thor on Thingiverse: https://www.***********.com/thing:1844205

Summary:

I remember when I had a clamp for my Hot Wheels tracks, my son has tracks now, but I figured I have a printer, so why not make my own. This one is solid and heavy and should last through his kids.... I hope.Printed with three perimeters, and 50% infill with a honeycomb pattern. Very stiff, very strong.