I have needed a bench vice for some time now and I had this 3' stick of acme threaded rod (acme means its for a vice) a regular threaded rod will wear out very very quick. so if you attempt this make sure you use the acme stuff.
I will be trying a moxon vice soon as well. so keep looking.
Step 1: Start by Making a "nut Case"
You have to start by encasing the nut with an opening to allow the threaded rod to pass through you could do this a few different ways.
My way was just the way it happened, no plans remember?
Step 2: Cut the Rest of Your Pieces
Step 3: Now Cut and Prep Your Dowel Rod
After that I cut the ends about 2" in from each end (see picture for detail) on the two for the rod supports.
Then make a few wedges for the support rods (this may require trial and error for good fit)
After they are cut, glue them in the rear rod support board flush and pound in the wedge with a mallet and cut them flush.
Make sure you drill the hole for the acme rod in the front jaws before you glue it to the front jaws.
Also make sure you dry fit things before you glue anything.
Take a look at the pics and place everything in line and glue clamp and let it sit overnight.
Step 4: Time to Make the Handle
Drill an undersized hole in the end for the rod to tap into.
Then drill a 1" hole through the side for the sliding handle.
you can use a file, but I used a grinder to cut a slight taper on the end of the rod and then made 3 grooves going vertical about 1.5" in.
Now put a nice blob of epoxy in the hole and screw the rod into the handle. let it sit overnight. (note that it is IMPERATIVE that you screw it in straight).
Step 5: Mount It to Your Bench!
I also used some leather washers for the front to prevent it from causing too much damage on the jaws of the vice.
Thanks for looking.