A simple and clean heart-shaped puzzle keychain designed for easy 3D printing. The model is lightweight, compact, and perfect for everyday use on keys, backpacks, or as a small decorative accessory.

The puzzle shape makes it a great symbolic item — ideal as a gift for friends, couples, or anyone who likes minimal and meaningful designs. The keychain can be personalized by adding names or short text, making it a unique and thoughtful gift.

How to add names in Tinkercad:

1. Open Tinkercad and create a new design.

2. Import the keychain model (STL).

3. Drag the Text shape from Basic Shapes onto the workspace and type your name.

4. Adjust the size and height (recommended 1–2 mm).

5. Place the text on the keychain and align it as needed.

6. Keep the text as Solid for raised letters or set it as Hole for engraved text.

7. Select both the text and the model, then click Group.

8. Export the model as STL and print.

Thanks to its simple geometry, the model is suitable even for beginners in 3D printing.

Features:

• Easy to print

• No supports required

• Beginner-friendly

• Customizable by color, material, and names

Perfect for personal use, personalized gifts, or small presents.