Connecting to a CNC machine, pros and cons of USB vs PP vs Ethernet etc.

[Jon.]

Well Jess, now we know you . You have well presented yourself here. I am half expecting soon to hear that RP is better than ball screw and that HD alu profile gantry is stronger than steel one..

What sort of steel are you talking about here? Heat treated stress relieved steel.. by far much stronger. Mild steel simply welded up and painted that will change shape over the years then going on its working life span, Aluminum will retain shape and last longer if built well. Hense why production machines always use heat treated steel or aluminum, but you still see people forking out thousands building machines from mild steel obviously going off your assumption, knowing one day they might wake up to find their machine is jammed.