CW Centrifugal blower replacement

This is a clockwise centrifugal fan impeller with forward-curved blades: 100 mm diameter, 40 mm high with a 4.75 mm mounting bore. (~3 15/16" x 1 37/64" x 3/16").

There are lots of good blower/squirell fan blades on Thingiverse; and some of the Customizer ones are quite amazing. But they all used so much material for the mounting cone and took so long to print.

I ended up making this one to custom meet my needs - exhaust fan. It's a tradeoff between strength, blower efficiency, and print