Prusa I3 10MM X Carriage Assembly With Tensioner

Redesigned mounts using set screws to fasten 10MM smooth rods.
Much more sturdy than stock 8MM design. Takes 370MM x 10MM
smooth rods. I've added my J-Head and extruder motor mount and an X belt tensioner to the X Idler and an adjustable Z endstop holder. The Idler mount now has "Smooth Rod" through holes so that the rods can be slid out to access the center section without disassembling the printer. The slot in the Idler for the belt bearing screw has a break out panel that must be snapp