Violin corner rib clamp.
https://diqn32j8nouaz.cloudfront.net...p_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...282#post208134
https://www.homemadetools.net/forum/...578#post182212
https://www.homemadetools.net/forum/...2793#post97151
https://www.homemadetools.net/forum/...218#post207940
https://www.homemadetools.net/forum/...240#post172780
