1. Go to Manage > Material Database.
  2. Open the page of the to-be-deleted MDB:
    • Click on the grey box next to +Add on the top panel
    • Select the to-be-deleted MDB from the list
  3. Click on the trash can icon to the right of the MDB title. A message will show up informing you the consequence of deleting the MDB.
  4. Confirm by clicking Delete.