07-01-2013, 07:58 PM
(07-01-2013, 06:50 PM)chucketn Wrote: I aquired a copy of the article on springs by Kozo Hiraoka and put his formula for calculating the mandrel diameter into my Excel spreadsheet on threading. It does not agree with Marv's mandrel program. Haven't figured out why.
Chuck
Care to share the article? I'll take a shot at it.