Summary

I needed a protective case for a Sony shotgun mic. Remixed a battery case big enough to add padding inside and duplicated threads on the body for a middle section as I have a limit on Z height to contend with. Nice thing about this design for starters is it won't roll off the table.

There are two options for the bottom, using a closed version or the open one in which case you have a plug to fit in it which you can glue padding to easily.

The one version with no external feature is for a middle extension. You can modify the length of it easily in sketchup to get the length right for your mic... or add a bunch and make a case for your fishing rod.

I added a 4mm hole in the top cap for a lanyard.

Cut a disc of 5mm neoprene for each end and a rectangle to fit wrapped in each end. Middle just floats free. Bubble wrap would work fine or some foam backed fabric.