How long was the tube for the vise? And by the size of blade that fit into it I was assuming it was 2" tubing. I have about 20 feet of thick walled 2" tubing that is just itching to be cut up and made into one of these. What size bolt/nut did you use? I suppose I could just use any larger size and be ok though.
The tube is 2"x 8" and the nuts are 3/8-16.
You could use any size nut but 3/8-16 is common and has a nice footprint on the jaws. The biggest reason is that it's free and laying all over the place on the jobs I run.
Cool. Thanks for the info. I should be able to make one up when i get a little time. I was thinking of adding one more lip/tab on the corner for a 45 degree angle as well. What do you think? Useful or useless? I know most of the work could be done with just the 2 tabs but as long as I am welding on the tabs why not.
Just two tabs are very useful. If you have a rotating vise, all you have to do is either flip the knife or flip the knife vise. I use mine mainly for hand sanding blades and then fine tuning the handle. For blade sanding I slide in a 1-1/2" x 1/4" x 18" steel bar and clamp it all in place. I had the same thoughts when I made mine 6 years ago but decided to practice the kiss princple. With 20 feet of tube you could try alot of variations.