I will try a diode in the supply line to see whether a Weller 7 tip ever
gets to magnastat temp and thermocouple measure the temp it does reach.
Then just a small trembler, relay, timer etc. You could even kick the
workbench just prior to picking up the iron
--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/