Airframes
Benevolens Magister
Yep, it's a problem shipping some things. All fluids and aerosols are prohibited, even by surface mail now, and even within a country, not just overseas. However, I did manage to send a small plastic bottle of Kristal klear inside the UK, by packing it tightly inside a small box, wrapping that, and posting it. No slopping sounds or feel, as it's basically PVA, but still banned by mail.