The file 'IamSly’s Parametric Hose Coupler 3D Printer Model' is (stl,scad) file type, size is 451.4KB.
A Parametric Hose Coupler
For connecting two hoses or tubes of different diameters.
Same as IamSly's version, except made the lip optional and made it available to the Customizer.
If this doesn't work for you, consider Boerni's Hose Adapter https://www.thingiverse.com/thing:2945382/files
If you need an even more custom version, or you need one printed, let me know.
2019-11-09 Updated version
I figured out what was so weird about these parameters, and did some rework.
0.325_inch_to_12.1_mm.stl | 1.1MB | |
0.325_inch_to_13.6_mm.stl | 1.0MB | |
0.325_inch_to_16.3_mm.stl | 1.1MB | |
0.325_inch_to_17.5_mm.stl | 1.1MB | |
SLyHoseCoupler.scad | 3.9KB | |
SLyHoseCoupler.stl | 1.3MB |