Set Up Bleed
If setting up a new document
- Select File/New
- Change Units to Millimetres
- Change Bleed to 3mm
- Change Colour Mode to CMYK Colour
- Set Raster Effects to High (300ppi)
![New-Illustrator-Document](https://cdn.shortpixel.ai/spai/q_glossy+ret_img+to_webp/samedayprinting.com.au/wp-content/uploads/2019/06/New-Illustrator-Document.png)
If you already have a document,
- Click off the artboard
- Select Document Setup
- Set Bleed to 3mm, and click OK
![Bleed-on-existing](https://cdn.shortpixel.ai/spai/q_glossy+ret_img+to_webp/samedayprinting.com.au/wp-content/uploads/2019/06/Bleed-on-existing.png)
- A red bleed line will appear around the Artboard
- Extend background colour to the bleed line
![Bleed Line](https://cdn.shortpixel.ai/spai/q_glossy+ret_img+to_webp/samedayprinting.com.au/wp-content/uploads/2019/06/Bleed.png)
- Extend the background colour to the bleed line
![Bleed Extension](https://cdn.shortpixel.ai/spai/q_glossy+ret_img+to_webp/samedayprinting.com.au/wp-content/uploads/2019/06/bleed-extension.png)
- Save with the appropriate PDF Preset
(See how to set up a PDF Preset)