Twin screw vise - video

Twin screw vise. By The Traditional Carpenter. 38:03 video:

https://www.youtube.com/watch?v=-cnyigpBDcw

Part 2. By The Traditional Carpenter. 19:23 video:

https://www.youtube.com/watch?v=EsD3EvS2z5k

Part 3. By The Traditional Carpenter. 12:48 video:

https://www.youtube.com/watch?v=mTeC05Vzgw8