D_Hall wrote:Are these real problems? I have no idea. They're just two possibilities that pop into my mind.
Of course, these days, there are plastics which have relatively low melting points - Polycaprolactone has a melting point of around 60 degrees C.
Whether or not these materials are practical in other ways is a matter I'm far from knowledgeable enough to talk about, but a material with a melting point that low does get around the second problem you mentioned, and helps with the first pretty well.