What do you do about the condensation that sometimes builds up inside a tube your working. I hate that shit and sometimes i'll try and shake it all out but that never works.

I happened to me in a shitty way yesterday. It ended up cracking the bottom of my tube ...almost ruined a pendant i was making.

I'd like to know what others usually do to prevent it or what they do when it's too late to prevent it. Very very curious. Thanks