Bowlfex 552 Adjustable Dumbbell Cradle

After buying a set of Bowflex 552 adjustable dumbbells used without the cradle, I discovered that no one sells replacement cradles. They only way to get a set is to find them used and they nearly cost $100. So some measurements, research, cad work, and two rolls of filament later I have what I needed for under $40. 

There is a whole in the center of each part that allows you to screw the cradle to a piece of wood to give it a sturdy base. However it will function without the extra construction, staying together well enough while holding the weights and depressing the adjuster button.