You can easily make them out of delrin, but for shaft / butt chucking into the head stock, black electrical tape works great if not better. Make sure you wrap the area 3-4 times, making sure the end where it stops doesn't overlap the end where u started, just short is great, and keep that small seam area away from your chuck jaws when clamping down. Works great, wrapping 3-4 times around protects the wood, and the electrical tape stays in place while doing your work. Just a helpful hint. Problem with delrin and other plastic type materials, they are hard to keep true and one spec of anything on them can throw you way off center when chucking into your lathe.