Pre-filter for Drinkwell Platinum pet fountains replacement part.
Blender + cleanup
First I took photos and measured the original broken piece, created in Illustrator a vector template, imported it into Blender and modelled the full piece carefully. Added some reinforcement in the bottom side where it broke.
Used the Blender 3D-Printing add-on to check the model and making sure everything was ok.
Double checked the mesh in Sketchup (attached pic) and sent to print. Used white "plastic bottle" to print.