ID Card Holder – Patterns
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Slim holder for ID-1 badges with plain or patterned back: honeycomb, Voronoi, asanoha, Truchet, topo. No supports.
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Model information
- Source
- Printables
- Category
- Other Gadgets
- License
- Creative Commons — Attribution — Share Alike
A slim, rigid holder for your work badge, with a back that is more than just plastic.
This holder takes any card in the standard ID-1 size (85.6 × 54 mm, like bank and work ID cards) and keeps it flat and protected. The card stays visible behind a large front window and can still be read by RFID readers. A slot at the top fits standard badge clips, lanyards and badge reels, and two round holes take a key ring or carabiner.
The back comes in six versions: plain, honeycomb, Voronoi, asanoha, Truchet and topo.
Features
Fits ID-1 cards up to 1.0 mm thick (most work and access cards), portrait and landscape
Holds the card on three sides: a 45° edge on the left, right and bottom keeps the card in place without clips or detents
Easy to swap cards: flex the card slightly and slide it in through the opening at the top, in front of the clip slot
Clip slot 15 × 3.5 mm for badge clips and reels, plus two 5 mm ring holes
Slim: 59 × 102 × 3.4 mm (portrait), 91 × 70 × 3.4 mm (landscape)
Support-free: no overhang steeper than 45°, prints flat on its back
Parametric: OpenSCAD source included
Back | Type | Look |
|---|---|---|
Plain | solid | clean, single color |
Honeycomb | cutout or inlay | 6 mm hexagons |
Voronoi | cutout or inlay | organic cells |
Asanoha | cutout or inlay | Japanese kumiko star pattern |
Truchet | inlay only | random quarter-circle tiles that form endless curves |
Topo | inlay only | contour lines like on a hiking map |
Cutout: the pattern goes through the back wall, and the back of your card shows through. Single color, no MMU needed.
Inlay: the pattern is a second color, flush with the back (0.6 mm, 3 layers). Needs a multi-material printer or a manual filament change. In PrusaSlicer, load …-holder.stl, then right-click it → Add part → …-color.stl, and give each part its own filament. Truchet and topo only work as inlays: as cutouts, their islands would fall out.
Printing
Back side down, exactly as the STL is placed
PETG (or PLA), 0.2 mm layers, 100 % infill (or 3 perimeters, it comes out solid anyway)
No supports, no brim
Smooth PEI gives a glossy back, a textured sheet a matte one
About 7–13 g per holder, depending on the back
Inserting the card
Flex the card slightly.
Push it in with its bottom edge first through the opening at the top, under the side edges.
Slide it down until the top end drops in front of the clip slot.
To remove it, lift the top end of the card in the opening and pull it out.
Make it yours
Everything is generated by the OpenSCAD files id-card-holder.scad and patterns.scad (included, works in the OpenSCAD Customizer). At the top of id-card-holder.scad you can change:
format: "portrait" or "landscape"
back: plain, honeycomb, voronoi, asanoha, truchet, topo
back_style: cutout or inlay
pattern_seed: a different number gives a new random Voronoi, Truchet or topo pattern
card_thickness and slot_gap: for thicker cards (keep slot_gap a multiple of 0.2 mm)
part: holder, or inlay for the second-color part
Example:
openscad -D 'back="voronoi"' -D 'pattern_seed=42' -o my-holder.stl id-card-holder.scadAbout the images
The images are renders made in Blender from the STL files. The sample card ("Nordhafen Labs") is fictional.