You might also want to explore the emcounimat.nl site, a new UNIMAT SL 3 jaw chuck sells there for €78 - not sure about freight cost to US but rather than just 3 jaws, this will get you a complete new chuck.
Verzonden vanaf mijn Galaxy
-------- Oorspronkelijk bericht --------
Van: Quinn Golden <quinngolden@...>
Datum: 15-03-2023 14:14 (GMT+01:00)
Onderwerp: Re: [Unimat] brazing broken teeth of 3-jaw chuck
A seller on eBay has a set available, 58$ plus 8 for freight. ?I have purchased from him in the past with no issues.?