If you use metal sheets during construction, then after you placed them in the construction menu, they (metal sheets) cannot be picked up.
Only if you drop metal sheets on the ground, and from there already pick up.
If you use metal sheets during construction, then after you placed them in the construction menu, they (metal sheets) cannot be picked up.
Only if you drop metal sheets on the ground, and from there already pick up.
P.S. It only works if you move metal sheets to the ground, and then pick them up.