Ah, lien trouvé. Mille milliers de merdes a pinterest, qui pollue l'internet et cache les sources premiers.
I'd been reading about the tangential lathe tool in different places on the internet, so decided to give it a try last year. Like so many others, I came up with a simple design and went for it. Here's what that looks like...
bbs.homeshopmachinist.net
Donc, ce n'est pas un outil a fileter, mais un outil tangentiel pour tournage "classique"