Just reiterating what many have already said. I borrowed a Ridgid set from a friend, including the chain vise, when I plumbed my shop for air a coupla years ago. I plumbed with 1/2" black pipe which wasn't too bad. Since I still had it in the shop, I then did a few projects using some 3/4" and 1" (very similar to what you are talking about). I can assert that this is real work, no joke. I am of average build, perhaps a bit more robust than the average joe, but it is taxing work if you are doing more than just a few pieces. I had that chain vise walking all over while threading that larger stuff. I think a proper vise mounted to a very sturdy workbench might be better if it won't move on you. I am kinda wanting to buy a set myself for the same reasons as you as I had to give back the borrowed set of course.