Airbrush Paint Storage

This is a paint bottle storage solution for any airbrush modelling paint bottle with an approximately 21mm diameter bottle cap. It places the bottles upside down so that you can easily reference the colour. This one holds 36 bottles. Shown are the cheap Chinese airbrush paints I based this model off but paint bottle design are mostly the same and it should fit most brands. Modify for your own unique bottles if needed.

I've included three models including:
1. A relaxed spaced out 36 x 36 bottle holder
2. A 36 x 36 bottle holder that has a closer spacing to minimise the footprint
3. A 1 x 1 single bottle holder that can be stacked as needed to suit your exact need

There are plenty of ways to make this modular to add more paint holders, add brush storage, water reservoir, stagger the bottles or add a handle. I've kept it simple in this one but feel free to remix the design and share your upgrades. I've included the single bottle holder file so that you can stack them easily and go as bi