Ramadan Spar-Challenge

This project was created with a lot of patience, attention to detail, and genuine motivation – and that's exactly what you should feel when you hold it in your hands

The idea behind it is simple, yet extremely effective:

Throughout Ramadan, you save a random amount daily.
By the last day, you will have saved a total of exactly €300 – and you'll also have a beautiful Ramadan decoration that motivates you every day to keep going

To ensure it doesn't just look like a boring "piggy bank," I developed an interactive system:

✅ Interactive Rotating Buttons (Done System)

Each daily amount is implemented as its own button.
Once you've inserted the amount, gently press the button in the lower area – it will then rotate and lie perfectly flush with the surface

This way you immediately see:

• which day is done
• how far you've come
• and how much you've achieved in the end

The default position is intentionally slightly tilted (the button is slightly pressed in at the top).
After inserting, each button needs a quick "click" to ensure they all sit uniformly – after that, the system works reliably

Why This Design Is Special

• Motivation through visible progress
• Premium Look (ideal in White/Gold or Black/Gold - my favorite)
• Interactive instead of just decor
• Perfect as a gift
• Perfect for families, couples, or individuals
• Removable without destroying the construction (thanks to the Back Plate system)

This model is not just for looking at, but for daily use

Print Profile

• Layer height: 0.2 mm
• Seam: Rear
• Wall lines: 2
• Detect thin walls: ON
• Infill: 8% Gyroid
• Supports: ON
  • Tree (Auto)
  • Style: Tree-Organic
  • Threshold angle: 30°
  • Frontcase: 35°

Quick Guide

1. Insert Frontcase
   • The front case has 7 nubs/pins that fit perfectly into the 7 holes of the main case.
   • Place the front case and gently press the pins fully into place.
2. Insert Backplate
   • Then insert the backplate into the guide at the back and slide it all the way in.
   • This backplate ensures:
     • that the money does not fall out the back
     • and that everything can be removed after 29 days without damage.
3. Insert into the Base
   • The assembled part (Frontcase + Maincase + Backplate) is then inserted into the base.
   • The opening in the base has a perfect fit.
   • If desired, you can glue the assembled part into the base with some superglue to secure it permanently.
4. Insert Buttons
   • Finally, the buttons are individually inserted into their designated slots.
   • When inserting, gently press each button down at the top to ensure it clicks cleanly into place.
   • This works with very little effort.

➡️ Done – from now on, you can save every day and visibly track your progress

Recommended Materials

• PLA (recommended)
• PLA Matte works especially well for an elegant look
• Color combinations that appear extremely high-quality:
  • White + Gold
  • Black + Gold

❤️ Support

If you like the project:

⭐ Rate the model
💬 Leave a comment
🚀 Boost me for Free

More Magnetron releases coming soon!

Note

This model was designed not only to look aesthetically pleasing but also to function mechanically reliably.
Nevertheless, as with all mechanical 3D printed parts, the better the print quality, the smoother the mechanism will operate

License

Design & Construction: O_G 3DStudio
Please do not re-upload this model as your own design or republish it without credits.
If you print and share it, I would be thrilled to see a photo and a tag/boost

Check out my other Ramadan designs: