[febusravenga]

Interesting observation and I have to relate - today I've measured ice thickness with classic stainless caliper - -3 celsius was enough for it to immediately glue to ice it was even barely wet.

Working such temperatures must be real hazard to skin, anything metal will glue to it immediately.

[amluto]

Let the metal cool down to the the temperature of the ice and try again. The problem isn’t generally that the ice is sticky per se; the problem is that the surface of the ice will melt if something warm enough touches it and then will freeze again and stick.