# How to make a card sleeve sizing gauge with vibe CAD

Compare several empty card sleeves against labeled reference slots before sorting them into boxes. The gauge uses user-entered dimensions and open edges, helping distinguish similar sleeves without treating nominal package sizes as exact measurements.

Category: Tabletop games. Difficulty: Intermediate.

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

## Make this project
An unvalidated sorting aid for empty sleeves, not a certified gauge or card-protection device.

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
- Measured outside widths of the empty sleeve types.
- Sleeve lengths and seam locations.
- Desired spacing between reference slots.
- Readable label size for the stored sleeve groups.

## 2. Give your CAD agent this prompt

Create an open-edge sleeve comparison gauge with sleeve_widths, sleeve_lengths, comparison_clearance, slot_depth, label_height and plate_thickness. Ask for missing measurements and the intended comparison method. Use short open channels with broad rounded entries and neutral labels. Keep sleeves empty during comparison. State that printed dimensions must be checked separately and that this is not a calibrated precision instrument.

## 3. Model and inspect
1. **Define what is being compared** — Measure the outside width of each empty sleeve including its seams. Keep that convention separate from the card size advertised on packaging.

2. **Build short reference channels** — Create shallow open-ended channels rather than deep pockets. Give the entry a broad radius so a sleeve edge is not directed into a sharp corner.

3. **Label the references** — Place the measured value and the user's group name beside each channel. Leave enough space that a sleeve in one channel does not cover another label.

## 4. Check the prototype
- Verify the source measurements and channel labels agree.
- Review one channel coupon with a spare empty sleeve before making the complete gauge.
- Inspect the exported dimensions with a separate measurement tool after fabrication.

## Avoid this mistake
Confusing the sleeve's internal card size with its larger external width can make every comparison slot misleading.

## Choose the material
PLA is a candidate for a rigid indoor gauge. PETG can also be considered, but neither material establishes dimensional accuracy.

## Order this part now

[Submit your CAD](https://partsforagents.com/for-humans?project=card-sleeve-sizing-gauge#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-sleeve-sizing-gauge/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-sleeve-sizing-gauge