I have copies of all the things we talked about in the past. Its not time for me to build a REAL induction heater until I have all the pieces & parts made. It appears to me making chokes are trial and error and heat sinks are the same thing too. At the moment I have no heat sinks large enough. I have learned some very good information about making chokes that makes it much easier to make a certain value and get it much closer to the value I need.FWIW, I don't see shortbus= as a 'complainer', he is more like one of a number of spectators, watching (unfortunately) someone flailing around in a pool. Life rings are being tossed in from every direction, but the swimmer appears to not want to grab any of them.
That's my view on this, and a number of other threads.