So because of the bed and frame dimensions if I mount the LGX extruder facing forward like I did with the IDEX then I will loose bed space. So I have chosen to mount the extruder on it's side so the nozzle can be tucked in closer to the carriage so it will be able to reach to the rear edge of the 510x510 Creality Ultrabase. The BL touch will mount just to the side of the part cooling fan and in front of the pancake stepper motor. Here is my design..



It is 20 minutes into printing out with a 0.4mm nozzle and at 0.3mm layer height on this rig: GEEETech i3 32bit Rework (3dprintboard.com) a.k.a. Old Blue