With PR FreeCAD#14460 the "machinability" model was introduced. This commits adds material cards with complete machining model data for various types of woods and engineed wood products. The data comes from the German text book "Zerspanung von Holz und Holzwerkstoffen", ISBN 978-3-446-47769-8, 2. Edition 2023, https://www.hanser-fachbuch.de/fachbuch/artikel/9783446477698 Usage of this data for our purpose is legal as facts are not protected by copyright according to German law.