#FrankenBot Question: I see lots of hot ends traveling on rods that are positioned one on top of the other. Any reason why the rods couldn’t be beside each other (oriented like the X axis/bed)?
Check my post about this. TL;DR, No. They can be oriented other ways.
I’ve had printers both ways. I really don’t see any difference as long as your motor that is moving the axis is positioned correctly to fit the design. I guess you could say you can change how top heavy it is ever so slightly if you go one way over the other. But that’s stretching it.
Either works. I’ve done both to good effect. You do get a height increase from side by side. I’ve migrated to the vertical approach (play and simple) to allow better accessibility for future designs that will include different tool heads.