Saw this and was impressed. It allows for a totally hidden means of making a machine bolt strength connection.
[video]http://www.lamello.com/fileadmin/user_upload/mediacenter/1%20Holz%20verbinden/3%20Invis%20Mx2-System/2%20Invis%20Mx2/3%20Videos/1-Invis-Mx2-System-EN.mp4[/video]
[video]http://www.lamello.com/fileadmin/user_upload/mediacenter/1%20Holz%20verbinden/3%20Invis%20Mx2-System/2%20Invis%20Mx2/3%20Videos/1-Invis-Mx2-System-EN.mp4[/video]