Seems the side board is a new part for the latest X-carve. Does anyone have the dimensions/files/hole pattern for it?
This can be found at https://www.inventables.com/technologies/x-carve-side-board-kit there are different specs for the different size machines so pick which one you want click on that model agree to download and save PDF file with all the information you need. these are towards the bottom of the page under files and attachments.