Needed to connect two pieces of drainpipe together. More specifically to connect a pipe with an external dimension of 75mm to a pipe with an internal dimension of 65mm. Ended up designing a 2mm thick connector with external dimensions of 80.2mm (largest/top part) that narrows to 64mm (smallest/base part). Internal chamfer helps with both printing and water.

Printed at 0.2mm layer height and with 20% gyroid infill.