all that mine is missing is the sliding part it looks easy to make i might contact hardinge and see if they have the drawings for it but if that comes with a hardinge taper mount chuck that is a stealI saw this on Facebook marketplace. Might be able to buy it or ask for more pictures.
i dont want to buy one i have a 4 way tool post so i just want this one working it would be great if someone on here has one and can provide plansYou might have missed my edit but Ebay has a D9 tool holder and has a picture of the missing piece. The FB ad comes with a Hardinge 6" four jaw.