I was looking for a heavy-duty photography gimbal head mount for use with large telephoto lenses. At the time, the commonly available gimbal heads were either too expensive or not up to the task.
Michael Fuchs Gimbal Head
I designed this gimbal head specifically to support a large 600mm f4.0 telephoto lens. I fabricated the mount out of alloy and mild steel. The main arm structure of the mount is a weldment with machined end fittings on a thin-walled 90 degree tube. Each arm fitting contains a rotation lock assemble and two heavy-duty ball bearings.