Quoting Mr Smiley : > On 18/01/17 01:02, Robin Bussell wrote: >> Weller WS80 > > I believe the Weller soldering iron bits contain a magnet that is used > to control the iron temperature > > > please correct me if I'm wrong > > > :o) > I believe you are wrong. On WTCP irons, the slug at the non-working end of = the interchangeable tips (the 'sensor') is made of an alloy with a Curie =20 point as marked on the tip, so they are no longer *ferromagnetic* =20 above the marked temperature. The permanent magnet is in the switch =20 part. --sp --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .