Are all parts solid bodies (no surface bodies or meshes)?
How big is that?
Is it going to be printed 1:1 scale?
Be aware that when (if) you scale things down that those tubes will become so thin they might not print or will be very brittle.
I have no way of telling the overall size - but that looks like something that would have to be scaled down significantly to print.
How bit is it? What is the diameter of the cylindrical tubes (or solids)?
It they are tubes - the scaled wall thickness becomes a problem as well, so do as solid cylinders if possible.