> ## Documentation Index
> Fetch the complete documentation index at: https://stem-docs.intellectualpoint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Your first design: name-tag keychain

> Design a personalized name-tag keychain in Tinkercad from scratch, then export it ready to slice and print.

## Your first real model

Time to design something and print it. In this project you will build a **personalized name-tag keychain** in Tinkercad - a flat plate with your name raised on top and a hole for a keyring. It teaches the core moves you will use for every model this week: shapes, text, alignment, holes, and grouping.

<Frame caption="From a digital design to a printed object">
  <img src="https://mintcdn.com/intellectualpoint/yASp17638wTnZpJG/images/intro3d/model-to-physical.png?fit=max&auto=format&n=yASp17638wTnZpJG&q=85&s=1d8b516261cf4f231ba41f30b925b705" alt="A 3D model on screen becoming a printed physical object" width="500" height="500" data-path="images/intro3d/model-to-physical.png" />
</Frame>

<Frame caption="The full pipeline you will use all week: design → export → slice → print">
  <img src="https://mintcdn.com/intellectualpoint/O9vEZP6xEEMFLHva/images/intro3d/design-pipeline.png?fit=max&auto=format&n=O9vEZP6xEEMFLHva&q=85&s=537f249b09d4e8c3ec53cb8e32a5c969" alt="Diagram of the design-to-print pipeline from Tinkercad to Cura to the Ender 3" width="1536" height="1024" data-path="images/intro3d/design-pipeline.png" />
</Frame>

## Step by step

<Steps>
  <Step title="Make the base plate" icon="square">
    Drag a **Box** onto the workplane. Resize it to about **50 mm long, 20 mm wide, and 3 mm tall**. This is your tag body. Round the corners for a nicer look by dragging the corner radius handle, or use a **Rounded Box** shape instead.
  </Step>

  <Step title="Add your name" icon="type">
    From the shapes panel, drag the **Text** shape onto the plate. Click it and type your name in the settings box. Set its height to about **4 mm** so the letters stand up off the plate.
  </Step>

  <Step title="Size and center the text" icon="align-center">
    Resize the text so it fits nicely on the plate with a small margin. Select **both** the plate and the text, then use **Align** to center them horizontally and vertically.
  </Step>

  <Step title="Raise the text onto the plate" icon="chevrons-up">
    Make sure the bottom of the letters sits on the top face of the plate (raise it so it overlaps slightly). The letters should look like they are growing out of the tag.
  </Step>

  <Step title="Add the keyring hole" icon="circle">
    Drag a **Cylinder** and switch it to a **Hole** (in the shape settings). Shrink it to about **5 mm** wide, place it near one end of the plate, and make sure it passes all the way through. This becomes the hole for your keyring.
  </Step>

  <Step title="Group it into one model" icon="group">
    Select everything (plate, text, and hole cylinder) and click **Group**. The hole is subtracted, the text merges with the plate, and you have a single solid model.
  </Step>

  <Step title="Export your model" icon="download">
    Click **Export → STL** to download your keychain as an `.stl` file.
  </Step>
</Steps>

## Slice and print

<Frame caption="Building the name-tag keychain step by step in Tinkercad">
  <img src="https://mintcdn.com/intellectualpoint/O9vEZP6xEEMFLHva/images/intro3d/nametag-steps.png?fit=max&auto=format&n=O9vEZP6xEEMFLHva&q=85&s=82d093c0c86b681991cb013d7f8e9d12" alt="Diagram showing the steps to build a name-tag keychain: plate, text, hole, group" width="1536" height="1024" data-path="images/intro3d/nametag-steps.png" />
</Frame>

<Steps>
  <Step title="Open it in Cura" icon="scissors">
    Drag your `.stl` into Cura. Lay it flat on the bed (it should already be flat).
  </Step>

  <Step title="Use beginner settings" icon="sliders-horizontal">
    0.2 mm layer height, 15-20% infill, 40-50 mm/s. No supports needed for a flat tag.
  </Step>

  <Step title="Slice and save to microSD" icon="save">
    Click **Slice**, check the preview, then save the `.gcode` to your microSD card.
  </Step>

  <Step title="Print it" icon="printer">
    Insert the card into your Ender 3, select the file, and print. Watch that first layer!
  </Step>
</Steps>

## Design tips

<CardGroup cols={2}>
  <Card title="Keep text bold" icon="bold">
    Thin, fancy fonts can break or fail to print. Chunky letters print cleanly.
  </Card>

  <Card title="Mind the overhang" icon="triangle">
    Raised letters print fine, but avoid floating parts with nothing underneath.
  </Card>

  <Card title="Check the scale" icon="ruler">
    Confirm your dimensions in millimeters before exporting - it is easy to make something tiny or huge by accident.
  </Card>

  <Card title="Save your work" icon="save">
    Tinkercad autosaves to your account, but export a copy of anything you want to keep.
  </Card>
</CardGroup>

<Tip>
  Once you nail the keychain, try variations: a nameplate for your desk, a luggage tag, or a gift tag. Every one uses the exact same skills - shapes, text, holes, align, and group.
</Tip>

<Check>
  You designed a name-tag keychain in Tinkercad, exported it as an STL, sliced it in Cura, and sent it to your printer. You just completed the full design-to-print pipeline!
</Check>
