3d-modeling

Analyze STL/OBJ mesh quality and printability for 3D printing.

6|Updated Apr 7, 2026
One-click install
npx skills add https://github.com/Kgan01/ghengis-skills --skill 3d-modeling-kgan01
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: 3d-modeling
Source: https://github.com/Kgan01/ghengis-skills/tree/main/plugins/ghengis-skills/skills/3d-modeling
Command: npx skills add https://github.com/Kgan01/ghengis-skills --skill 3d-modeling-kgan01

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

3D modeling and printing often struggle with mesh quality, non-watertight geometries, and suboptimal printability, leading to failed prints and wasted material. This Skill provides a structured approach to evaluate STL/OBJ meshes for print readiness, detect common issues, and guide improvements.

Core Features & Use Cases

  • Mesh quality analysis: checks manifoldness, holes, inverted normals, and triangle density to ensure watertight surfaces.
  • Printability guidance: suggests orientation, wall thickness, support strategies, and tolerances to optimize prints.
  • Workflow integration: supports common 3D printing workflows (STL/OBJ) and prompts users with actionable fixes and verification steps.

Quick Start

Upload your 3D mesh file (STL/OBJ) and specify printer constraints; the skill will assess the model and return recommended fixes and an execution plan.

Frequently Asked Questions about 3d-modeling

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I check if an STL file is watertight for 3D printing?

To check if an STL file is watertight for 3D printing, perform a mesh quality analysis to verify manifold geometry, detect holes, and identify inverted normals. This ensures solid surfaces and prevents print failures.

What is the best way to fix non-manifold mesh edges before 3D printing?

Fixing non-manifold mesh edges involves analyzing triangle density and surface connectivity to resolve structural errors. This process ensures watertight geometries and significantly reduces post-production effort on your final prints.

How do I optimize 3D model orientation for overhangs and supports?

Optimizing 3D model orientation for overhangs requires evaluating printable angles and suggesting strategic support placement. This minimizes material waste and improves surface quality on your printed objects.

Does mesh quality analysis work with OBJ workflows or only STL files?

Mesh quality analysis works with both OBJ and STL workflows for 3D printing. It evaluates manifoldness and triangle density across these formats to detect common mesh issues and guide improvements.

Why does my 3D model have failed prints due to wall thickness and tolerances?

Failed prints from wall thickness and tolerances occur when dimensions exceed printer constraints. Analyzing printability provides guidance on minimum wall thickness and dimension tolerances to ensure successful fabrication.

What printing constraints do I need to provide for a 3D model assessment?

For a 3D model assessment, you need to specify your printer constraints such as dimension tolerances and minimum wall thickness. This allows the analysis to provide actionable fixes and a verified execution plan.