On 3/8/2023 at 4:43 AM, dutchzcarguy said:

send it on a piece of plywood i would advice...

Cant lay it flat. I came up with this custom box. 

Yup.. and now a piece of plywood 3mm over it otherwise the box of cardboard is to weak/flexible..  I doný know how the postmen over there are but they throw things.. they don't care. 🤬