J-badov - It appears you have your concepts of isolation and I have mine. Nothing wrong with that and I agree, no need for pissing contest. There are many ways to skin a cat.
I designed Nimbus platform, a 6 DOF sub 1.0 Hz device about 8 years ago. Nimbus is the world's only single air spring iso stand. For ballast for the Nimbus I use steel - as you say: inexpensive and well-suited to the task. Depleted uranium would be my next choice :-)
I designed Nimbus platform, a 6 DOF sub 1.0 Hz device about 8 years ago. Nimbus is the world's only single air spring iso stand. For ballast for the Nimbus I use steel - as you say: inexpensive and well-suited to the task. Depleted uranium would be my next choice :-)