# How to make a crochet-hook size divider with vibe CAD

Separate crochet hooks inside an existing case using a removable divider that accounts for handle shape, hook heads and visible size markings.

Category: Craft. Difficulty: Beginner.

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

## Make this project
An unprinted storage insert for craft hooks, with no retention or protective-case performance claim.

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
- Measure each hook’s overall length and widest handle section.
- Measure the hook head projection and any flattened grip area.
- Record the case interior and the space beneath its closed lid.
- Choose compartment widths using a paper layout with actual hooks.

## 2. Give your CAD agent this prompt

Design a removable case divider with hook_lengths, handle_widths, head_keepouts, case_width, case_depth, lid_clearance and divider_height. Use open channels with finger access and visible size marks. Ask for the case interior and thickest handles. Keep the divider loose and do not grip the hook heads.

## 3. Model and inspect
1. **Orient the hooks** — Place hooks so size markings face upward and the heads occupy a clear end region. Include the full handle profile rather than only the nominal hook diameter.

2. **Build the compartment insert** — Add a shallow floor or open perimeter and low dividers inside the measured case. Make wider channels for ergonomic handles where needed.

3. **Expose the pickup area** — Lower the dividers near each grip and round the ends. Preserve clearance beneath the case lid with the tallest hook in place.

## 4. Check the prototype
- Arrange actual hooks over the paper plan and check that each can be lifted by its handle.
- Inspect the closed-case section for lid collisions and contact with projecting hook heads.
- Compare exported outer dimensions with the case and plan a short divider-fit sample before a full insert.

## Avoid this mistake
The printed size on a hook describes its working portion, not the handle envelope; use measured handle dimensions for storage.

## Choose the material
PLA or PETG are possible starting choices. Evaluate the divider finish and case gap on a sample rather than relying on material flexibility to correct a tight fit.

## Order this part now

[Submit your CAD](https://partsforagents.com/for-humans?project=crochet-hook-size-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/crochet-hook-size-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/crochet-hook-size-divider