Hmm never thought I would create such discord with a simple old school point of wisdom or be accused of trying to create a space probe, good grief.
Fact is there have been many episodes of propellers throwing blades in some venues and further that is why Landing Products created the D-1 series of props as opposed to the C-2 series and has much thicker hub to help with the much greater RPM, I also witnessed one prop blade failure at the hub this in a 428 event I was participating in at the basin the gentleman had to go to the hospital. It was an still common to carve and customise props for these types of events and caution about removing material from the sides of the hubs is most certainly common.
To anyone who carves, creates or otherwise modifies their props I say great I love doing it too, its just not a great idea to remove material from the side of the hub area.
I attended a nearby clubs swap meet event a week ago and picked up this little guy for a buck and one I have not seen before, makes a nice addition to my little museum
John