Cardspool Storage Box – modular piggy bank

Transform empty filament Cardspool cores into a practical, modular piggy bank.

This model was specifically designed to meaningfully reuse old cardboard spools, instead of throwing them away.
With a few printed parts, a stable, stackable, and expandable coin box is created.

🔧 Features & Benefits

• ♻️ Upcycling instead of Waste
  Old Cardspool cores get a second life.
• 🧩 Modularly expandable
  Multiple spool bodies can be connected using an intermediate ring.
• 📦 Stackable & space-saving
  Ideal for organized saving (e.g., by goal, child, or occasion).
• 🎨 Individually customizable
  Different colors possible for lids, bases, or rings.

🖨️ Printing Info

• Material: PLA or PETG
• Support: not required
• Easy & beginner-friendly print
• Suitable for common Cardspool cores

💡 Tip: Multiple modules result in a tall piggy bank or several separate coin boxes.