Thanks guys for the compliments, it means a lot coming from guys. In answer to a few of your comments; Vodkaman, this prop was made just like that, by soldering a tube into the hand cut copper propeller, and although it doesn't show up well in the pic it rides against a cone washer epoxied to the nose.
Fatfingers, I have used pop rivets for tubes too and they work pretty well. And Spare, I'll have to check out McMasters for those nuts.
Again thanks for the encouraging words.