Another Spring Tool Holder

[Hawkeye]

If you look over stevec's photos, you'll see that his toolholder has two different ways to add spring to the base metal. There is a circular insert, obviously spring steel, at the 'give' point. A more common addition is the screw at the back end of the tool. It presses on a strong spring that pushes on the 'movable' front part of the tool and also provides a measure of adjustability to the stiffness of the whole thing. If you have enough thickness in the shaft on yours, you could easily add a plunger, spring and pressure bolt.