I would like to have a way to show the "structure" of a product.

For example, when manufacturing skateboards, there is:

a top graphic
fibreglass (product A)
bamboo (product B)
bamboo (product C)
bamboo (product B)
fibreglass (product A)
a bottom graphic

BOMs don't seem to allow me to use the same product more than once (though I know that I can w multiple quantities). The main thing I am looking for is a way to show the "stack" of materials to a worker.

Is there a way to do this in OpenERP?

Thanks