Traditionally thread dies are stored laid flat. I don't use dies that often so I made this rack to hold a small number of 20mm or smaller dies. It has two open sides to provide better finger access to get the dies out. Not being able to see the size of each die in the rack is not really a problem because of the low number of dies in each rack.

The rack is fully stackable to help minimise occupied space. It is fully compatible with the Gridfinity system by Zack Freedman.

I have included a number of file formats to make it easy to amend the rack if needed.