It is dangerous to use a thin board as an inclined plane because the board could break, splinter, or collapse.
Plank Thin, lightweight wood is balsa.
He was the first to fly across the Atlantic. This was a big deal and his plane was basically lightweight wood and thin skin. It was a very dangerous flight and he became a hero.
I think you are allowed knitting needles in your luggage that goes into the plane hold (main luggage), but you are not allowed them in your hand luggage because they can be classed as dangerous. If you want to knit on the plane, I have used pens before. If you use some thin pens or pencils, that should work.
The question is, what grammage board is the CD sleeve made from?
The bullseye.
The thin piece of wood used to cover a roof is called ply board or deck board. Plyboard is a sheet material manufactured from thin layers or plies of wood veneer that are glued together.
The "fuselage".
Yes, it has 1 plane of fracture and breaks into thin sheets
palette
The thin set under the board is to fill in any low spots in the floor. It is not to adhere the board to the floor. It is preventative against deflection. If there is a low spot and you do not fill it in, the board will flex and the grout/ tile will crack. Do not use construction adhesive it will do more harm then good.
How to Grow Thin - 1922 is rated/received certificates of: USA:Passed (National Board of Review)
Engineered wood.