solidcraft-shell-and-tangent-arcs SKILL.md skillA
solidcraft-shell-and-tangent-arcs from randomonkey05/solidcraft-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add randomonkey05/solidcraft-agent-skills/solidcraft-shell-and-tangent-arcs@git:20261027.9af30e1Pins git:20261027.9af30e1 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- randomonkey05/solidcraft-agent-skills
- Path
skills/solidcraft-shell-and-tangent-arcs/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261027.9af30e1, committed Oct 27, 2026
- Size
- 3,594 bytes
- Repository stars
- 12
- License
- Apache-2.0
Use when applying solid.shell (hollowing, underside cavities, open face) in SolidCraft, or when a shell fails or hangs: causes, safe order, tangent-arc precision and the pocket-cut fallback.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# solid.shell in SolidCraft: how it works, how it fails, how to get around it
## Syntax
`solid.shell {faces:[[x,y,z]], thickness, direction:"inside"|"outside"|"both", tangent_chain?, body?}`
- `faces` are points on the faces to REMOVE (open). For an underside cavity pick a point on the bottom face z=0 that lies inside the outline and outside bosses and bores, for example [-38,0,0].
- `direction:"inside"` keeps the outer shape. `body` names the target body.
## Failure 1: "offset: a corner whose faces don't meet the same way after the move"
- Cause: arcs that are meant to be tangent (for example a convex R12 around a hole boss and concave R75 side arcs) were entered with 5-decimal coordinates, so the faces are only nearly tangent. The offset treats the joints as real corners and fails for any thickness, even on the bare extruded base.
- Fix: compute the tangent points analytically (the point on the line between the two arc centres at distance r1 from the first centre) and enter the coordinates with 10 decimals in `sketch.arc.three_point` (start, end, through). The shell then works on the base and on base plus cylinder.
…Read the whole file at its exact version.
How to install
mdr add randomonkey05/solidcraft-agent-skills/solidcraft-shell-and-tangent-arcs@sha256:4c4536d2118219ccThe line at the top of this page pins the label git:20261027.9af30e1, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_a7gxlvbc6lizp4be)
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Versions
The registry has recorded 1 version of this file, committed on Oct 27, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3594 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
randomonkey05/solidcraft-agent-skills · 12 stars · license Apache-2.0 · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_a7gxlvbc6lizp4be GET https://markdownregistry.com/api/v1/resolve?ref=randomonkey05/solidcraft-agent-skills/solidcraft-shell-and-tangent-arcs GET https://markdownregistry.com/api/v1/blob/4c4536d2118219cc4f97c136c808c68004d6ffa5d7127d255235facb93097149
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.