Boiler assumption was based on this article: http://www.coffeeco.com.au/articles/july2002.html which claims Delonghi machines have a stainless steel boiler. So, hardly offering great temp stability, but probably better than a thermoblock. I'll have to have a better think about it and possibly open up the machine to have a peek at the internals, purely out of interest like...
Boiler assumption was based on this article: http://www.coffeeco.com.au/articles/july2002.html which claims Delonghi machines have a stainless steel boiler. So, hardly offering great temp stability, but probably better than a thermoblock. I'll have to have a better think about it and possibly open up the machine to have a peek at the internals, purely out of interest like...