picked up a gold metallic mathmos recently.
with the normal bulb, it melts, does everything but bubble - the wax rises, looks like it's about to break free, then stands perfectly still!
took out the regular bulb, put in a lower wattage one - a 25w golf ball shaped one.
with this it does work to an extent - one glob breaks free, rises, falls, repeat over and over.
not too exciting then - anyone ever experienced this? - any solution?
i'll investigate 40w then - or indeed coil - is there anywhere to get such a coil? - or is it a case of DIY ?