I recently got alot of my other DIY projects finished and thought I may take a stab at a turntable this fall. I have been thinking alot about it lately and thought I would ask you gentlemen if anyone has contemplated using an air bearing as the main bearing? Has anyone tried using one? Is it cost prohibitive. I figure now is the time to ask if this idea is way out in left field before I commit myself to something that is not practical. Does anyone know how much they cost and if they are available on the surplus market? Lastly, what type of air supply is needed? Please let me know if I am way off base. Thank you all in advance.