Expandable Pencil Case / Paint Brush Holder – Quick Pull-to-Open, Push-to-Close

Introduction:

This case features a flexible lid and base that allow for quick pull-to-open and push-to-close use, while full-length threads keep the lid securely in place. The threaded design also allows you to adjust the length to fit your needs—expanding up to 14" and collapsing down to 8". Ideal for pencils, pens, brushes, or similar tools.  

Print Settings:

•     Nozzle: 0.4 mm
•     Layer Height: 0.28 mm
•     Supports: No
•     Material: 
  • PETG (recommended) – provides the necessary flexibility for smooth opening and closing 
  • PLA (not recommended) – too rigid for quick opening and closing, but threads fine. (tested)
•     Infill: 15% Gyroid
•     Perimeters: 2

Change Log:

•     v1.0 - 08/26/2025
  • Initial Release