# How to make a card deck divider with vibe CAD

Separate decks inside an existing card box using a thin divider with a readable tab. Measure the actual sleeved cards and box interior so the divider stays easy to lift without bending cards or preventing the lid from closing.

Category: Tabletop games. Difficulty: Beginner.

By partsforagents · AI-authored · Updated 2026-11-10.

## Make this project
A proposed divider for the user's own game components, without a claim of archival card protection.

This recipe has not been physically validated. Create and inspect the exact CAD for your dimensions; a concept image is not an orderable CAD file.

## 1. Measure
- Card width and height including any sleeves.
- Box interior width, depth and closed height.
- Corner radius of the box floor.
- Tab height that remains visible above the cards.

## 2. Give your CAD agent this prompt

Design a card-box divider with card_width, card_height, box_width, divider_thickness, edge_clearance, tab_height and tab_width. Ask for missing measurements and whether cards are sleeved. Use rounded lower corners, a broad label tab and a plain smooth card-facing surface. Keep the divider loose rather than wedged against the box. Include a simple paper-outline export for checking fit.

## 3. Model and inspect
1. **Measure the stored deck** — Use the actual sleeves and normal storage orientation. Record the box's narrowest width and the available space above the tallest card edge.

2. **Draw the divider outline** — Make the lower panel slightly smaller than the box opening using a user-selected allowance. Match rounded floor corners so the divider can reach the bottom.

3. **Place the label tab** — Offset tabs across several dividers if needed. Keep any text on the tab rather than embossing ridges against the stored cards.

## 4. Check the prototype
- Try a full-size paper outline inside the box with the cards present.
- Check the lid-height reference against the tallest tab.
- Review corner relief and edge finish before selecting the final thickness.

## Avoid this mistake
A tab that is readable with the box open may still collide with a recessed lid or internal lid lip.

## Choose the material
PLA provides a rigid indoor prototype option. PETG is another candidate, but the divider should not rely on flexing against cards.

## Order this part now

[Submit your CAD](https://partsforagents.com/for-humans?project=card-deck-divider#workspace) or [connect your agent](https://partsforagents.com/guides/cad-to-print#connect).

Have the model ready? Upload the exact customer-approved file. Starting from this guide? Generate the CAD from your measurements, inspect it and export the revision you want made. Include this guide URL in the review notes; the file and approved specification determine the part.

Required inputs:
- Authorized exact CAD file
- Declared units
- Material family and requested grade/color
- Quantity
- Intended use and critical fit requirements
- Contact email
- Destination country and postal code

**No payment at submission.** Submit a nonbinding manufacturing request now; the exact reviewed offer and payment link follow when ready. Current firm production scope is reviewed PLA/PETG for eligible contiguous-US/DC delivery.

### Agent submission steps
1. **upload_cad_request** — Get authorization to store/process the exact exported file, then use its bytes and approved intake fields. Save the returned request ID and file SHA-256.

2. **get_cad_preflight** — Read measured geometry and unknowns for that uploaded file.

3. **set_manufacturing_specification** — Save the customer-approved manufacturing choices and returned specification fingerprint.

4. **place_order** — Submit order_type manufacturing with the real request ID, exact specification fingerprint, acknowledge_nonbinding true and a saved unique idempotency key. Include this guide URL in review_notes along with the approved requirements.

5. **get_order_fulfillment** — Use the returned order ID to read the authoritative offer and manufacturing progress. A recipe URL alone never identifies an order.

Reconcile an uncertain result before retrying. Reuse identical arguments and the same idempotency key; never submit a second request just because its payment link is pending.

## Machine-readable resources

- [This complete guide as JSON](https://partsforagents.com/vibe-cad/card-deck-divider/guide.json)
- [All project guides](https://partsforagents.com/vibe-cad/catalog.json)
- [Exact tool schemas](https://partsforagents.com/tools.json)
- Full workflow MCP: https://partsforagents.com/api/mcp (authenticated)
- Free advice MCP: https://partsforagents.com/api/advice/mcp
- Canonical guide: https://partsforagents.com/vibe-cad/card-deck-divider