Looking for a hatch lock for the battery compartment of your Foamie? How about this:
The additional weight is 4g. All you need is the 25 mm long nib of a pen and these 3D-printed parts:
To attach the parts with the foam board you need some (hot-)glue.
DOWNLOADS:AP_Hatch_Lock_Cutting_Template_Letter.pdf (22 downloads) AP_Hatch_Lock_Cutting_Template_A4.pdf (16 downloads) AP_Hatch_Lock_stl-files.zip (27 downloads)
STEP BY STEP GUIDE: