Piston for 2in PVC pipe

This is a simple item designed on tinker cad as I learn how to 3D design and print.  As is, the tolerances for a 2 in PVC pipe are not fantastic, but the model can be adjusted. The Piston measures ~51.8 mm in Dia.  The Pin is 11.95 mm while the Piston bore/writ pin bore is 12mm.  The rod is 79mm in length, 10mm x 18mm. This was not designed with any project or utility in mind, rather to learn basic 3D design.  Expect absolute minimum engineering input.