Gentlemen (and all ladies!), After watching the "thread" on insulation, and the comments on DELRIN and its generics, I seemed to recall the use of DELRIN for RF Plate choke forms in the past. Here is an example from PW DAHL's On-Line store: http://pwdahl.com/cgi-bin/store/commerce.cgi?product=rfchokes&cart_id=9228764.5624 What are the risks here? Jim W6JNG