Spring adapter for MK6 Thumb/Normal screw plunger

This OpenSCAD script will generate a plunger to be used to hold the Thumbscrew in place and prevent it from workign it's way out during a print
It is heavily based on JMZ's "Spring adapter for MK6+ plunger"
It differs from Jmz's design in that it has a spring recess to fit the kind of spring used in 4xAA battery packs and that it has a recess to allow for the thumbscrew to fit without interference