Modular Shelving For Dry Cabinet Spool Storage

I use a dry cabinet to store my spools once they are unboxed, and was just stacking spools on top of the other.  Invariably, I need one near the bottom for my next print, and end up dumping most of the higher ones out onto the floor to get the spool I need .  Plus, since the sides of the spools are not visible, I cannot always tell what is on the spools unless I pull them out and spend even more time searching for the right material.  

I got tired of this, so created some shelving units that will fit five spools across one row.  I split the models to fit on almost any printer.  They have a honeycomb pattern on the top, and triangles on the sides to limit the amount of material that is needed to print.  The bottom row pieces are angled back by 1° so the spools on the upper rows will not roll out, at least as long as the cabinet itself is on a level surface.  The additional row shelves have small features that hook into the shelves below to lock them in place and prevent them from sliding around.  

The height is designed so that standard spools will fit with a few mm to spare.  If you store a lot of spools that are still in plastic, the shelves that are 10cm taller might be a better choice. With the regular shelves, there is also room for two rows of horizontal spools at the very top, with the taller shelves, only one row fits.

I printed these at .25mm height in either PLA or PETG, almost any height and material should be fine.  

The units have a brace at the back for rigidity.  Depending on your printer, you might need to support the short horizontal part in the middle.  They print fine without supports on my MK4S with only a bit of sagging at the bottom section and still work well.  

I included some common name tags to sit in front of each spool.  They print quickly and a color change makes the text stand out more.  If you have a different filament type, you can create your own directly in the slicer using the Add Part and Add Text commands.