You want to quickly cut a fence post on the spot, but you don’t have a table or sawhorse close by. You could try to balance the post on your foot, grip the pipe with one hand, and grip the saw with the other, but that seems a little risky and your cut probably won’t be all that accurate. The Tri-Vise exists for situations just like this.
The Tri-Vise was introduced at the 2009 National Hardware Show, but I first heard about it on the Daily Giz Wiz Podcast. This made-in-the-USA tool will securely hold materials off the ground while you cut, drill, weld, solder, or perform other operations.
You can slip pipe, conduit, rebar, angle iron, square tubing, dimensional lumber, dowels, or other materials through one of the custom ports, and the Tri-Vise pinches the material so it won’t move or spin.