This is a 1.5in diameter Kort-ish style propeller designed from the ground up to be 3d printed. Learning from different propellers I've printed (some from here, some from Thingaverse) I developed this propeller that is ideal for printing and is durable.
Counter rotating set printed with Taubman 618.
Printing recommendations: 0.25mm or smaller layer height, 70% or more infill, and support is recommended to support the first few layers. Will work fine with ABS, but nylon is recommended for long-term durability.