Have finally come up with a means of rolling cones accurately with a minimum of applied handling other than set up and adhering the seam. Another wish granted, a source and an order placed for 2 mil titanium foil. Ought to make my larger cones lighter and stronger which has been a goal. That will relegate my 2 mil aluminum to tweeter cones, since a '2-way Walsh' has been my long term focus....
Work on this 'n that has been mostly fits 'n starts, but now things can be more focused with these goals met.
More as things develop....*G*