This is a 200mm catenary gate made for h0 scale models. It was made to be printed even by older printers. It isnt based on any particular irl catenary gate although it should resemble european catenary gates. The scale is probably off but it should be ok.

Creality

Ender 3 Pro

0.12mm

doesnt matter if you have 0.4mm nozzle, if you have a smaller one use 100%

if you have any other printer just use the best resolution and 100% infill, and DON'T use rafts as the parts are really fragile and getting themof a clear plate is difficult enough

glue everything with super glue and be patient :)