A departure from the old impeller design! Image 1 shows my latest impeller design with now 8 blades instead of 19, a baseplate in the rear, and a slopey cone-ish shape for the body. I really could’ve just used my first ever cone-looking design (image 3) to simply change just the blade design and count, but the minor changes I’ve done to yesterday’s baseless one (image 2) were—say—not so minor as I thought… The more you learn. I’ll do prototyping very soon to really figure out what is roughly the optimal impeller shape with my limited knowledge. Pretty happy with the project, but sadly it’s not so mechanical as I’d like. [img1: Latest; img2: Yesterday’s baseless; img3: First version]