I broke this prop the same way as etienne did by running with a strap undone:
I decided to reshape the tip to look like some of the more efficient prop designs that I’ve seen. Of course the airfoil shape at the tip needed to be reshaped as well. I traced the tip onto a piece of paper to make a template to get the other side to match. Then I balanced it on the same prop balancer as etienne.
Good as new… maybe even better.
My other props had several dings on the leading edge which I fixed by sanding the same amount off both blades. After balancing they spin smoother than when they were new.