DJI Osmo Pocket Filter Storage

UPDATE: 22 OCT 2019
I made a new "Shell" that has the numbers, "4, 8, 16, 32". This new part name is, "Filter Shell 32.stl" So now there are two SHELL options. The original SHELL is just named, "Filter Shell.stl" and it has the numbers, "8, 16, 32, 64". Either one of these "shells" will fit the "Filter Rack" equally. (It still takes a bit of sanding and working the RACK in and out to get it to loosen up.)

ORIGINAL POST:
I love the Freewell filters for the Osmo Pocket, but I hate the carrying/storage case that they come in. Not only is it really hard to open, but it's designed for 8, even though I only bought 4. Not only that, but the filters are hard to pry out of the tiny foam slots.

I wanted minimum storage space and easy access for 4 filters. So here is my design.

The filters fit into the RACK perfectly, but they're just sitting there, so if you turn the RACK over or flick the RACK, the filters will fall or flip out. I'm glad to be careful and I decided it wor