The main box can comfortably fit most gift cards, but has enough height to fit other small objects. The exact dimensions are W55 x H14.5 x D86mm.

BOM

• 10x M5 Nuts
• 10x M5x8 Socket Cap Head Screws
• 16x M3 Nuts
• 10x M3x20 Socket Cap Head Screws
• 6x M3x12 Socket Cap Head Screws

For a perfect fit, all screws should be to the DIN 912 / ISO 4762 standard.

Slicing

• Slice in the imported orientation for supportless printing.
• 0.2mm Layer Height.
• 3 perimeters / walls for “Layer 2 Bolt”.
• I recommend printing with a brim for all files, especially the bolts.
• Print 4 bolts.
• Print 2 of “Layer 3 Half”.

Printing the bolts together or in pairs helps to prevent overheating the layers, but unless your retraction settings are dialed in, you may produce lower-quality threads.

Post Print

• The counterbored nuts and bolts are printed with a very thin layer to enable supportless printing. Simply poke a hole through these before inserting the bolts.

Here's a YouTube Short for reference