# Introduction

<table data-card-size="large" data-view="cards" data-full-width="false"><thead><tr><th>Difficulty</th><th>Language</th></tr></thead><tbody><tr><td>Moderate to experienced</td><td>English</td></tr></tbody></table>

### Tools required <a href="#tools-required" id="tools-required"></a>

<table><thead><tr><th></th><th width="311.3333333333333"></th><th></th></tr></thead><tbody><tr><td>Tool<br>Description</td><td>Soldering iron<br>Used for heat set inserts</td><td><a href="https://docs.zerog.one/manual/build/hydra/introduction#lightbox__item_1"><img src="https://docs.zerog.one/assets/images/tools/soldering_iron.png" alt="soldering iron"></a></td></tr><tr><td>Tool<br>Description<br>Sizes</td><td>Hex Keys<br>Used to tighten and losen bolts<br>2mm, 2.5mm, 3mm, 4mm</td><td><a href="https://docs.zerog.one/manual/build/hydra/introduction#lightbox__item_2"><img src="https://docs.zerog.one/assets/images/tools/wera_hexkeys.png" alt="soldering iron"></a></td></tr></tbody></table>

### Do’s and don’ts <a href="#dos-and-donts" id="dos-and-donts"></a>

1. **Read and execute the instructions.**
2. **Got questions?**
   1. Join our [Discord server ](https://discord.gg/zerog).
3. **Don’t just look at images.**
   1. An image doesn’t explain the full story.
   2. There is text that will explain every step, read it carefully.
4. **Don’t skip instructions.**
   1. Unless we tell you to.
5. **Don’t use force, you shouldn’t have too.**
   1. Make sure to not use a unreasonable amount of force.
   2. Plastic does break and flange bearings crack, would be a waste wouldn’t it?