Created a new replacement dust adapter for my circular saw that replaces the original one. The original didn’t fit my Nilfisk Multi II 30 shop vac. Now I don’t need to fiddle with the adapter I first made.
Sharing if someone has the same combination: https://makerworld.com/en/models/996710
@Prizephitah you could modify this to print along the axis of the pipe. Might need some supports but should be more resistant to the bending forces. Perhaps modify to have a flat base to help with adhesion?