Love Letter Photo Keychain

Cute Photo Frame Keychain 💌

A compact and creative Cute Photo Frame Keychain featuring a hidden sliding photo mechanism inside an envelope-inspired design. Carry your favorite memory everywhere with a keychain that looks simple on the outside but reveals a personal photo inside.

📸 Sliding Photo Frame Mechanism
The keychain includes a built-in sliding frame system:
Slide the inner frame out to reveal the photo
Compact envelope-style exterior
Smooth and satisfying sliding action
Secure locking system on both ends
The mechanism is intentionally tight at first to help keep the frame securely in place.

🔒 Locking Mechanism Details
The top locking section may feel difficult to press during the first few uses
Once inserted, the frame can slide freely
A second locking point at the bottom keeps the frame secure during everyday use

⚠️ After approximately 5–10 initial slides, the mechanism naturally becomes smoother and easier to operate while still remaining secure.

🖼️ Photo Size
Designed for photos sized:
75 × 42 mm
Trim the photo accurately for the best fit and sliding performance.

❤️ Assembly Note
A separate heart-shaped piece is included as part of the design.
The heart piece must be glued manually into the center section after printing.

🖨️ Print Settings
Supports: ❌ No support required
Walls: 2 walls
Infill: 10%
Layer Height: 0.2 mm recommended

Important Printing Instruction
Print the "Photo_Letter_Body" part in an upright position
Use a brim for better bed adhesion and print stability for "Photo_Letter_Body"
This helps achieve smoother sliding performance and cleaner tolerances.

✨ Features
Functional sliding photo frame
Cute envelope-inspired design
Portable keepsake keychain
Secure locking mechanism
Lightweight and easy to print

⚠️ Important Notes
Slight sanding may improve initial sliding smoothness if needed
Avoid forcing the mechanism aggressively during first use
Print accuracy may affect sliding tolerance depending on printer calibration