So I picked up a set of Sorby 16 TPI thread chasers. I decided to make the tool armrest and a relief tool shown here.
The relief tool is an 1/8" allen wrench cut back a little with a flat on both sides. The tool armrest is designed to cradle the female thread chaser as it extends over the tool rest. I got the idea from Richard Raffan's book, The Complete Illustrated Guide to Woodturning. It is made from a 1/4" carriage bolt 9" long I picked up at Lowes for a couple of bucks. Easy enough but it did take some grinding. So I practiced on some Osage Orange and on some Dogwood. I was able to get some threads cut. There is a learning curve to hand chasing so I will have to get back to you with the final results. Stay tuned.