A fully customizable, parametric storage case designed to safely hold a wide range of optical filters — from astrophotography filters (1.25" / 2") to common photography filters  and other circular accessories.

The model allows you to adjust:

• inner diameter & height
• number of slots
• wall thickness & tolerances
• lid fit and engraving
• side cutouts for easy filter removal

This makes it a versatile organizer not only for astrophotographers, but also for photographers, travelers, DIY makers, and anyone needing a compact protective case for small round items.

Why it’s useful:

• Protects delicate glass and coatings,
• Filters never touch the bottom — no scratches,
• Easy to open, easy to remove filters,
• Clean, modular design suitable for travel,
• Prints fast and requires no supports,
• Fully parametric — adapt it to any gear you own.

Perfect for storing astro filters, camera filters, microscope optics, small lenses, adapters, batteries, and other circular accessories. A practical addition to any camera bag, telescope kit, or workshop organizer.

This model is optimized for easy, support‑free printing on any printer.

• No supports required,
• 0.2 mm layer height recommended for clean edges,
• PLA or PETG both work great (PETG for outdoor or travel use),
• 3–4 perimeters for a strong, protective shell,
• 10–20% infill is enough.