I made this adapter to fit my shop-vac and table saw. A 57.5mm OD to 31.5mm ID adapter/reducer for DeWALT DWE7485 exhaust port to shop-vac.
I printed it with both PETG, and PLA, with solid infill. Both types of filament used were very strong.
No supports.
Created with FreeCAD on Debian linux.
The author marked this model as their own original creation.