Per brief discussion on chat with Derrilex: If makign a crate, he would be using ply or MDF. Bunnings sells a range of cheap and nasty sheets from 9 mm to 18 mm - or a flooring product called yellow tongue for about $40 a sheet ( 19 mm) thick I'd happily make one, but looks like muscles can arrange something for collection from Thomastown. Edit: Oh yes, most commercial machines will have some means to screw them securely to the pallet so they don't move in transit. Might mean removing feet, but there will be a way.