Have a look at this site.
https://www.hossmachine.info/
This looks like something that could be modified and adapted to the Triac.
He has a 16 and a 12 auto tool changer carousel that he built for his X2 Mill.
Also somewhere on the site there is a video of it working, he has quite a number of videos of his projects - or try youtube on
https://www.youtube.com/watch?v=nw5HiP8JLN0.
His design looks simple and looks like it could be made on the Triac. He made his using his X2 mill so there should not be a problem to make it on the Triac.
Maybe I'll get to make one someday
