This is a support that allows quick change of extruder/hotend for prusa i3.I provide FreeCAD source file so you can change or adjust the parts to your needs.I updated the design to compact it, now the width is 80mm, so the gain is about 40 mm in X axe compared with the previous design.I've deleted the previous stl files, but the FreeCAD file is still here (Quick-Fit-Extruder-Support.FCStd).The new stl files are from Quick-Fit-Extruder-Support_v2.FCStd, so be carefull when you download the files.Print and enjoy.