Curly style pen holder

Can fit from 5 to 8 pens with 15mm diameter. The 8 pen variant has a larger center with 20mm diameter.

It's meant to be printed in vase mode.

You can make perimeters a bit wider to have a stiffer model - I have printed mine with 0.6 mm external perimeter for 0.4 nozzle (Print Settings → Advanced → External Perimeters).

However it can be printed with following settings, if more robust model is required:

• Perimeters - 3 to 4
• Top solid layers - 0
• Infill - 0%