Walkman AAA Battery compartment (ultra compact)

A simply to print and ultra compact external battery compartment for the Sony Walkmans (i.e. WM EX-678) and Minidisc Players of the late 90s and early 2000s. The Walkmans that where designed to run with the so called 'gumstick batteries' where equipped with external battery contacts for screw-on adapters (photo) that accepted AA batteries. My design is for AAA batteries and is much smaller (65mm x 17mm x 13mm) than the original adapter (71mm x 13mm x 22mm).

Assembly:
Just add 2 'battery cl