Squishing is important, else the forces involved are negligible. Warming them up increases their movement and thus the likelihood of a number of things (includi

Squishing is important, else the forces involved are negligible. Warming them up increases their movement and thus the likelihood of a number of things (including random interactions with the thing they're squished against). You might also be interested in cold welding. https://en.m.wikipedia.org/wiki/Cold_welding https://en.m.wikipedia.org/wiki/Cold_welding