This is a storage solution for sanding discs in 125 or 150 mm diameter.

They can be stacked with an integrated connection system and they keep together also without screwing them to a wall or wood. Anyhow for more than 5 pieces it's recommended to screw them to something.

Update:

I added a _tall version, which can be used in case you are using packs of 50 papers. They provide nearly 70 mm hight for your papers. I started with 150 mm honeycomb and will extend soon.

Some comments:

• For the different grids i made recesses with the respective grid number for easy identification.
  They currently reach from 40 to 3000. If you need another text, please write a comment. 
• To save filament and print time i also added a version _honeycomb.
• In the folder Accessories you find caps to cover the connectors at the top part and spacers if you need more space between two parts.

If you like my work and want to support it you can do it here: 

You can see the system in action in this video from 4:15

Or here at 3:00

For the respective random orbital sander wall mount take a look at:

https://www.printables.com/de/model/387328-random-orbital-sander-wall-mount-for-150-mm-sandin

Can be printed without support.

Hope you enjoy!