Nice.
What prog did you design them in?
Will send you a DM
Rhino 3D and Cura for slicing the print.
Ah. Dabbling in 3d printing myself. Fusion + Cura on a Ender 3V2. Done a couple of mini bits in PETG. Servo take off for the manifold and some pipe ends for a cleaner look.
What filamet are you using on these?