Bribie,
I think you may be referring to my intentions a while ago to freeze my immersion in a block of solid ice but advice from Batz turned me off this course as after the chiller initially heats up it melts the ice around the coils & creates a pocket of warm water thus slowing down the whole process. Crushed ice in an esky is much more efficient.
In the final stages of setting up the plate chiller & using my immersion for the last time as we speak.
Planning on using my bore water for chilling once the plate chiller is up & running. I will then have a 16 metre immersion up for sale if you're interested Banora?
You should find a pic of the immersion somewhere in one of my albums below.
TP