To unwrap a model and export a PNG for texturing in photoshop
- Select the model or models
- Open ‘UV’ > ‘UV Editor’
- In the UV Editor window go to ‘Image’ > ‘UV Snapshot’
- Change format to PNG (Has an alpha channel so will have transparency)
- Increase the size (Over 2000 is ok)
- Set the filename, make sure it is in the ‘Images’ folder of the current project
- Click ‘Apply and close’