Remixed to include an alternative mounting solution using the hex inserts merged into one. This one no longer needs the inserts as its all attached together then can be slotted into the honeycomb. If you perfer to have it “moveable”, the small hex, and inserts the original model uses would be better, I did not plan to move it, and would like something without the inserts.

No supports needed, hex inserts lay flat, and don't need any supporting.

should fit any files are are roughly 5-6mm in diameter, and the concaved top is around 12mm.