Bogen six side to Manfrotto 501
I have an old Bogen tripod that is strong enough to stand on, and I love it, but I'm moving to Manfrotto 501 qr plates. So I mashed this together.
Print with support. It'll take a while to get the support material out, but it's worth it. Grab the M4 bolt based knob out of Rukey's original files, http://www.thingiverse.com/thing:29740
Mine's plenty strong and has taken much stress testing, Your milage may vary.
I made very little alteration to the 501 bit. I had to redo the six side Bogen part because my machine had problems with the original, but it is heavily inspired by Zgbot's thing