My dad gave me this multipurpose vise a few months ago. I've figured out how to keep the vise from moving right to left, but I haven't figured out how to keep the head from rotating around. Anybody have any ideas? I wasn't able to post a picture, but here's a link:
https://www.harborfreight.com/5-inch-multi-purpose-vise-67415.html
https://www.harborfreight.com/5-inch-multi-purpose-vise-67415.html