Lattice

Community

ghbalf

lattice

Generate a 3D lattice or infill pattern inside a bounding region. Useful for lightweight structural parts.

Overview

Publisher	ghbalf
Repository	`freecad-ai`
Skill name	`lattice`
Stars	557
Forks	89
Bundled files	Instructions only
License	LGPL-2.1
Links	Skill source Repository

Markdown instructions
A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.
Works with any LLM
AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.
Self-contained
Everything the model needs lives in the instructions — no extra files to sync.
Open source
Published by ghbalf on GitHub. Read the source before you install it.

Installation

Install the Lattice AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

Open the app and go to Plugins → Skills.
Choose "Install from GitHub".
Paste the skill folder URL below and confirm.
https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice
Enable the skill in any chat where you want it available.

Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills

git clone --depth 1 https://github.com/ghbalf/freecad-ai.git /tmp/freecad-ai
mkdir -p .claude/skills
cp -r /tmp/freecad-ai/skills/lattice .claude/skills/lattice

Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Lattice in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Lattice on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Lattice is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

Loaded only when it is needed
The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.
Switch models mid-chat
Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Lattice / Infill Pattern

Generate a 3D lattice or infill pattern inside a bounding region. Useful for lightweight structural parts.

Pattern types

Grid: rectangular grid of holes or beams
Honeycomb: hexagonal pattern (strongest weight-to-strength ratio)
Diagonal: 45-degree crosshatch
Gyroid (advanced): triply periodic minimal surface

Parameters to ask (if not provided)

Pattern type: grid / honeycomb / diagonal
Region: existing object to fill, or bounding box dimensions
Cell size: distance between pattern centers (default 10mm)
Wall thickness: thickness of lattice walls/beams (default 1.5mm)
Height/depth: extrusion height of the pattern

Construction approach

Grid pattern

Create a sketch with a rectangular array of circles or squares
Use spacing = cell_size, hole diameter = cell_size - wall_thickness
Pad to height, then boolean-intersect with the bounding shape

Honeycomb

Create hexagonal cells: 6 line segments per cell
Hex radius = cell_size / 2
Offset rows by cell_size * 0.75 horizontally and cell_size * sqrt(3)/2 vertically
Pad and intersect with bounding shape

Diagonal crosshatch

Create parallel lines at 45 degrees, spaced by cell_size
Create second set at -45 degrees
Lines have width = wall_thickness
Pad and intersect

Important

Always create the lattice larger than the target region, then use boolean intersection to trim
Label clearly: "Lattice Grid 10mm" etc.
For 3D printing, ensure wall_thickness >= 2x nozzle diameter (typically >= 0.8mm)
After construction, hide all sketches for a clean viewport:

python
for obj in App.ActiveDocument.Objects:
    if obj.TypeId == "Sketcher::SketchObject":
        obj.Visibility = False

Frequently asked questions

What does the Lattice AI skill do?

Generate a 3D lattice or infill pattern inside a bounding region. Useful for lightweight structural parts.

Why use Lattice on TypingMind?

Because you install it once and use it with any model. Lattice is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Lattice in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/ghbalf/freecad-ai/tree/master/skills/lattice. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Lattice?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Lattice?

As many as you like. As long as a model supports skills, you can use Lattice with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Lattice AI skill free?

Yes. It is published on GitHub by ghbalf under the LGPL-2.1 license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

Lattice / Infill Pattern

Pattern types

Parameters to ask (if not provided)

Construction approach

Grid pattern

Honeycomb

Diagonal crosshatch

Important

Frequently asked questions

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