# Part Modeling I

## Constraints

The table below summarises different **constraints** and their use in 2-D plane in Fusion 360

| Name                |                                                                                                                           Symbol                                                                                                                           | Description                                                                                                                          |
| ------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------: | ------------------------------------------------------------------------------------------------------------------------------------ |
| Vertical/Horizontal | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FoTo0lkkILr1jq24jTkOK%2Fimage.png?alt=media&#x26;token=f3d79757-1cf4-4a9c-ad80-033718fa77db" alt="" data-size="original"> | The Horizontal/Vertical constraint in Autodesk Fusion 360 forces sketch geometry to snap to the closest horizontal or vertical axis. |
| Coincident          | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FDQWqrnTeU20bSwV8PCz0%2Fimage.png?alt=media&#x26;token=d4517104-cec8-48ca-8dc7-55dc0f0c4021" alt="" data-size="original"> | The coincident constraint fixes the position of two points or a point and a line or curve together in a sketch                       |
| Tangent             | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FM8luohmyzJRhtrJfqi0v%2Fimage.png?alt=media&#x26;token=b7bea290-6844-472e-ba67-727bae4f19b2" alt="" data-size="original"> | The Tangent constraint forces a curve and another object to touch at a single point without crossing                                 |
| Equal               | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FWPBaLwctTwCrCr7XndDW%2Fimage.png?alt=media&#x26;token=9b08e3c2-5957-45fc-8032-8ee6d63f4524" alt="" data-size="original"> | The equal constraint makes two or more geometries the same size                                                                      |
| Parallel            | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2Fb9OppgHJg25aLyKzawEw%2Fimage.png?alt=media&#x26;token=682ee61f-4ab7-4781-ba4d-3dd33972f911" alt="" data-size="original"> | The parallel constraint is used to make two lines in a sketch parallel to each other                                                 |
| Perpendicular       | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FcAj16E4ylhwrH8PsIh2g%2Fimage.png?alt=media&#x26;token=492301df-3eb1-4cd4-a7c4-59a6577a430d" alt="" data-size="original"> | The perpendicular constraint forces two lines to remain at a 90-degree angle to each other                                           |
| Fix/Unfix           | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FORrdu7VSLqKHuGGr2nnJ%2Fimage.png?alt=media&#x26;token=a0424cbd-798e-410c-84a5-2c242c9329a8" alt="" data-size="original"> | Lock the size or location of a point or object                                                                                       |
| Midpoint            | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FEatWg3qSnsv6Vn3QrmGY%2Fimage.png?alt=media&#x26;token=5ac2ec93-f0d0-46c6-8b20-5db386bcf842" alt="" data-size="original"> | Constrains a point or object to the midpoint of another object                                                                       |
| Concentric          | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FVnCd18B0xUhe6s7Gh8oY%2Fimage.png?alt=media&#x26;token=e9761fb1-9cce-4fef-9d87-a6806f6930dd" alt="" data-size="original"> | The Concentric constraint forces two or more circles, arcs, or ellipses to share a common center point.                              |
| Collinear           | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FAsWlKVeFFBuv6V2IWxEF%2Fimage.png?alt=media&#x26;token=e0c2d057-a496-4292-ab5c-d1725bb28632" alt="" data-size="original"> | The Collinear constraint forces two or more objects to share a single line in a sketch                                               |
| Symmetric           | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2F0f4ceQjBNBWgPOfcG5nO%2Fimage.png?alt=media&#x26;token=b7839394-9701-406b-9e28-f47cbd538053" alt="" data-size="original"> | Constrains two or more objects so that they are symmetrical (identical to each other in relation to a common axis)                   |
| Curvature           | <img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2F6uz5xqMeGXtmyzL45bGF%2Fimage.png?alt=media&#x26;token=ec09525f-acdf-4b6d-a8a4-091068b78f14" alt="" data-size="original"> | The curvature constraint creates a smooth, continuous curve between two or more objects in a sketch                                  |

## Extrude

There is a fancy function in Extrude called **taple angel**, which can control inclined angle from the base to the extrusion. As shown below,

<figure><img src="https://3776884245-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fg3xstaR7928mGJvz015i%2Fuploads%2FeZSAjBMnGAgV6BDZsjbV%2Fimage.png?alt=media&#x26;token=db9ebbb6-79ad-46f6-8e94-5178a99d4fbc" alt=""><figcaption><p>Extrusion with angle</p></figcaption></figure>
