I created box inlay to store the cheap roller sharpener from China. 

You can found it here: [https://www.aliexpress.com/item/1005006348334832.html](https://www.aliexpress.com/item/1005006348334832.html)

(The link is just for the example. If you bought it from different seller, you can use the photos in the link to see if it matches your product)

The box is based on famous Whity's “Rugged Box (Parametric)”.

The inlay lets you nicely store the magnetic knife holder, cylindrical main body, and 4 sharpener discs. (I only have 3 discs, but someone might have more)

You will need 6x M3x30 screws for the hinges.

I also recommend to put some foam in the lid so that the stored parts don't move inside.