I loved GrandFather's original insert, but after sleeving with Mayday Premium sleeves (90 microns) the cards wouldn't fit in the insert without sliding everywhere or lifting the lid. Use all the rest of the files in the original, just replacing the card tray here. It holds them in tight so that they don't spill out. It's a close fit to use the original amount of space, but they do fit.
My print in the photo is hashed as I print without tops/bottoms/walls to save on filament.
The author remixed this model.
New card box for premium sleeved cards