Wade extruder derivate optimized for fast filament change

I created this derivate of the Wade for personal use over a year ago. It does not need springs but uses three or four layers of thick doublesided elastic tape instead. Also it does not need the short axis for the idler, but only a short screw. You will have to print this in ABS or maybe Nylon. The axis used for the locking mechanism has to be printed from Nylon, or vapour smoothed ABS, otherwise it will very likely not be strong enough to work.
The two holes in the axis need to have M4 threads