Prusa Mendel i2.5 X-axis Idler and Motor Ends

Inspired by current i2/i3 x Driver and Idler designs. Hacked together crudely with apologies to the precision work by the Prusa team ;) We can only afford precision guesswork here.

Important Notes:

• Spacing between Z-axis guide rod and screw is different from modern designs. This is for the old Mendel design (https://reprap.org/wiki/Prusa_Mendel)  with spacing of 30mm (wider than modern design)
• Idler and motor side Z-axis guides have cutouts sized for LME8UU (European) ID8, OD16, L25 linear bearings … but should be workable for US LM8UU - probably, holes will be oversized. See https://reprap.org/wiki/Linear_bearing
• x-axis guide rod spacing should be the same as modern i3 design - 45mm
• T8 lead screw used for z-axis, note 3.5x mounting holes per side
• Idler end just has a plain thru hole for M8 rod

Use case:

• I'm pairing with new x carriage for Titan Aero extruder. See this model: https://www.thingiverse.com/thing:2347449