Click on the right arrow next to the materials collection drop-down list to open the details pop-up menu. This menu allows you to perform additional material-related functions.
Open or create a collection
Use the Open or create a collection menu item to open an existing collection (or file) or create a new materials collection (folder).
Save collection as
Use the Save collection as menu item to save a copy of a collection with a new name.
Add collection to favorites
Use the Add collection to favorites menu item to add an existing collection to the list of favorite collections (appearing at the bottom of the collections drop-down list).
Remove collection from favorites
Use the Remove collection from favorites menu item to remove a collection from your list of favorites (appearing at the bottom of the collections drop-down list).
Use the Purge Unused menu item to remove all materials in the In Model materials that are not actually used in your model.
Use the Delete All button to delete all materials in the In Model view, whether they're in use or not.
Small Thumbnails, Medium Thumbnails, Large Thumbnails, Extra Large Thumbnails
Use the Small Thumbnails, Medium Thumbnails, Large Thumbnails, or Extra Large Thumbnails menu item to change the size of the thumbnails in the Select panel.
Use the List View menu item to display the materials in list form.
Use the Refresh menu item to update the materials appearing in the Materials Browser.
Use the Get More menu item to get more materials from the SketchUp web site.