FreeCAD Slim CR80 (85.6×54 mm) Badge Holder (Minimal, Supportless)

A small, low-profile, one-card holder designed around the CR80/ID-1 standard (85.6 × 54 × 1 mm). It uses a small internal stops to keep the card secure. A lanyard/clip slot lets you wear it vertically without extra hardware.

Highlights

• Holds one CR80 NFC/ID card (bank/ID/MIFARE/Desfire format);
• OpenSCAD design for easy remixing;
• No supports required – no post-processing needed;
• Fast print - just 12 minutes for standard settings;
• One-piece print - no assembly required;
• Slim design - only 3 mm thick;
• Minimal size - 95.8 x 56.5 mm;
• Minimal material use - 2.07 g PETG or 0.68 m x 1.75 mm of filament;
• Three mounting holes – two Ø4.6 mm and one 4.6 × 19.6 mm slot.
   

Dimensions & Fit

• Card standard: CR80 / ISO ID-1 – 86 × 54.5 × 1 mm;
• Outer holder size: 95.8 × 56.5 × 3 mm;
• Internal clearance: Tuned for standard FDM printer tolerances.

Note: Not designed for thick card sleeves (more than 1 mm) or stacked cards (more than one);

Note: No scratch protection.

Note: No RFID/NFC shielding.

Printing Recommendations

• Orientation: Print flat on the back face (opening facing up);
• Layer height: 0.2 mm (0.16–0.28 mm works);
• Perimeters/Walls: 2–3;
• Top/Bottom: 2–3 layers;
• Infill: None;
• Supports: None;
• Brim: None;
• Elephant-foot compensation: 0.2 mm recommended for crisp openings.

Materials:
 

• PETG or ASA/ABS: strong and durable – ideal for badge reels;
• PLA/PLA+: Prints well, but avoid prolonged heat exposure (e.g., hot car);
• Works on both smooth and textured build plates (textured gives a nice finish).
   

To open the model CAD file use FreeCAD.