Those images are of a friend’s work who is teaching me.
It’s a ridiculously strong material because the used skateboards are even denser than the new ones. Somethin about maple having pores(?) that give the nose and tail all that pop but then you eventually lose the pop as the pores get compressed.
These decks are in pretty good condition still. Glue-ups with more damaged decks can be more challenging because there are more gaps and flaws. Wood glue and epoxy help.