Shelf using Baseboard Molding to get a shelf of any length. Simple print using no support. I used bolts and nuts to more secure the shelf to the brackets for better stability.

Example Baseboard - [https://www.homedepot.com/p/Kelleher-LWM623-9-16-in-x-3-1-4-in-MDF-Baseboard-Molding-MDF221A/327079933](https://www.homedepot.com/p/Kelleher-LWM623-9-16-in-x-3-1-4-in-MDF-Baseboard-Molding-MDF221A/327079933)