# How to check how a small assembly moves before building it with solidcraft

Repo: [tangency-labs/solidcraft](https://github.com/tangency-labs/solidcraft) | Difficulty: Advanced | Time: 1 hour 30 minutes | Basis: From the README

Combine parts with joints and run a motion study to spot interference before you print or machine anything.

**Who it is for:** Hobbyist designing a hinge, linkage or small mechanism

**The problem:** Parts that look fine alone can collide or bind once assembled.

**The outcome:** You see where parts interfere and can fix dimensions before making a physical copy.

## Steps

1. Model or import the individual parts.
2. Assemble them and add joints.
3. Run a motion study and an interference check.
4. Adjust parameters and rerun until the motion is clear.

## Prompt to paste into your agent

```text
Using SolidCraft's assemblies, joints and interference tools, walk me through checking <mechanism> for collisions. Tell me what parameter to change if two parts interfere.
```

## Caveat

Motion studies and contact sets are listed as features but the project is early, so validate results with a physical test fit.

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URL: https://dedupedai.com/use-cases/tangency-labs-solidcraft/study-motion-in-a-small-mechanical-assembly/