# How to make a game box spacer with vibe CAD

Fill an unused gap beside an existing game insert with a lightweight hollow spacer. The shape follows the box's actual inner walls and corner radii, reducing loose movement without pressing on cards, boards or the box lid.

Category: Tabletop games. Difficulty: Beginner.

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

## Make this project
An unvalidated gap filler for storage organization, not a structural brace or protective shipping insert.

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
- Gap width and depth at both the floor and rim.
- Height of the neighboring insert or component stack.
- Box corner radius and any inward wall taper.
- Finger access needed to remove the spacer.

## 2. Give your CAD agent this prompt

Model a removable game-box spacer with gap_width, gap_depth, spacer_height, wall_thickness, corner_radius and fit_clearance. Ask for missing dimensions and whether the box walls taper. Use a hollow open-bottom shell with a broad top and a finger recess. Keep clearance from all neighboring components and the lid. Do not use an interference fit or claim transport protection.

## 3. Model and inspect
1. **Measure the empty gap** — Place the existing components in their normal arrangement. Measure the gap at several heights rather than assuming the cardboard walls are perfectly vertical.

2. **Build the hollow shell** — Create the outside footprint, then hollow the underside. Keep the top below the box's closing plane and avoid narrow protrusions near component stacks.

3. **Add removal access** — Cut a broad finger recess into an accessible side. Review the vertical lift path so the spacer can be removed without shifting the entire insert.

## 4. Check the prototype
- Try a cardboard block matching the proposed outer dimensions.
- Inspect the lid reference plane for clearance above the spacer.
- Compare the footprint against the box's actual rounded corners and taper.

## Avoid this mistake
A spacer sized from the box rim may be too wide at the floor and push the cardboard walls outward.

## Choose the material
PLA is an indoor prototype option. PETG can be explored, but a looser measured fit is preferable to relying on material flex.

## Order this part now

[Submit your CAD](https://partsforagents.com/for-humans?project=game-box-spacer#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/game-box-spacer/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/game-box-spacer