Double AA-Battery to D-Battery Adapter

This thing is designed to be used in conjunction with 2 AA rechargeable batteries. In this configuration the "D-battery" puts out 2.4V, which together with 3 other AA- to D-Battery adapters like [Thing 107924](https://www.thingiverse.com/thing:107924) result in the 6V normally needed for some Nerf guns.

In the rendered images bend metal parts are visible. These parts need to be made out of a ~4mm wide metal strip. Such metal strips are not that easy to find. In Germany these are usually inclu