A great idea to save leftover filament is to insert it into your prints. Above is a stackable tray design that uses small pieces of filament to create an unusual texture.

Print include 2 parts,  base tray,  that should be one and stack tray, that can be multiplied.

Key features:

• Easy to print
• Stackable
• Reduce waste of old filament
• Minimalist design

Assembly steps:

1. Print tray profile

    

2.  Cut 30 mm length pieces of filament

   

    

3.  Insert filament pieces in all holes of tray