Fan propeller

The best way to remove the supports is to separate them as a whole with a knife. I carefully pushed the knife between the propeller blade and the support from the leading edge. I removed the inner part with narrow pliers and cleaned it with a flat screwdriver. It is held on the shaft only by friction. This is for safety. If it hits something during rotation, it will slip. For better friction on shaft, you can use a rubber band around central part. The propeller can be sanded with sandpaper. A more suitable material would be PETG, but it is harder to sand. Created in Alibre Design. I can edit upon request.