Hardware Box Stackable Shelves

I wanted a way to store all of my screws, nuts, washers, and other hardware I use for my soldering projects.  There is no end to the organizers people have made for this purpose, but for most of them you need to take the hardware out of its original packaging.  However, the original packaging usually has the pieces already organized in separate compartments of the plastic packaging.  As I purchased more parts, the plastic packaging started to stack up and when I wanted the third package down in the stack I had to remove the first two and everything would shift.  As such, I wanted something that would store those plastic packages individually.  

I came across  the Stackable Shelves by Billd (URL: https://www.printables.com/model/608230-stackable-shelves).  They were intended to solve the same problem and looked great.  The only problem was that they used up a lot of time and filament to print.  As such, I took a page from the ancient Romans and cut out arches on either side of the shelves.  This makes the build lighter, faster to print, and uses ⅓ less filament.  

Like the originals these come in 4 sizes (dimensions are of inside usable space):

• small (D:135mm x W:70m x H:25mm); 
• medium (D:150mm x W:90mm x H:37mm); 
• medium-large (D:175mm x W:115mm x H:37mm); 
• large (D:175mm x W:150mm x H:40mm)